CyberSecurity news
FlagThis - #zeroday
|
Pierluigi Paganini@securityaffairs.com
//
Apple has released details about a zero-day vulnerability, CVE-2025-43200, that was exploited by Paragon's Graphite spyware to hack at least two journalists' iPhones in Europe. The vulnerability was a zero-click flaw in iMessage, allowing attackers to compromise devices without any user interaction. Apple had quietly patched the flaw in iOS 18.3.1, which was released on February 10, but the details of the vulnerability were not publicized until recently.
The security advisory was updated four months after the initial iOS release to include the zero-day flaw, described as a logic issue when processing a maliciously crafted photo or video shared via an iCloud Link. Apple stated that they were aware of a report that this issue was exploited in an "extremely sophisticated attack against specific targeted individuals." Citizen Lab confirmed that this was the flaw used against Italian journalist Ciro Pellegrino and an unnamed "prominent" European journalist. Citizen Lab also confirmed that Paragon's Graphite spyware was used to hack the journalists' iPhones. This incident is part of a growing trend of mercenary spyware operators exploiting iOS through silent attack chains. The now-confirmed infections call into question a report by Italian lawmakers, which didn't mention one of the hacked journalists. It remains unclear why Apple did not disclose the existence of the patched flaw until four months after the release of the iOS update, and an Apple spokesperson did not respond to a request for comment seeking clarity. Recommended read:
References :
@research.checkpoint.com
//
Microsoft's June 2025 Patch Tuesday has addressed a total of 66 vulnerabilities across its product range, with one zero-day vulnerability, CVE-2025-33053, being actively exploited in the wild. This critical flaw exists in the Web Distributed Authoring and Versioning (WebDAV) implementation, and its exploitation could lead to remote code execution. Microsoft has issued an urgent security update to mitigate this threat, even for outdated systems like Windows Server 2008 and components of the long-retired Internet Explorer. The urgency of this patch is underscored by the ongoing exploitation of the vulnerability by the Stealth Falcon APT group.
The actively exploited zero-day, CVE-2025-33053, poses a significant risk because attackers can achieve remote code execution at the local level simply by tricking a user into following a malicious link. This vulnerability has been exploited since March 2025 by Stealth Falcon, a hacking group known for targeted attacks in the Middle East. Researchers at Check Point discovered the flaw being used against a Turkish defense company, where malware was inserted to facilitate data exfiltration and the installation of a custom keylogger. The attack involves a .url file disguised as a PDF, which, when clicked, redirects to a WebDAV server controlled by the attacker, causing a legitimate Windows diagnostic tool to execute a malicious file. Alongside the actively exploited zero-day, Microsoft's June 2025 Patch Tuesday addresses a range of other vulnerabilities, including ten that are rated as "Critical". Another notable flaw, CVE-2025-33073, affects the Windows Server Message Block (SMB) client and could allow attackers to gain SYSTEM privileges. This vulnerability is considered less likely to be exploited but can be mitigated by enforcing server-side SMB signing via Group Policy. The updates also include fixes for vulnerabilities in Microsoft Office, .NET, Visual Studio, and other products, highlighting the breadth of the security update. Recommended read:
References :
CISA@All CISA Advisories
//
The Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning regarding a potential broader campaign targeting Software-as-a-Service (SaaS) providers. This alert follows the discovery of unauthorized activity within Commvault's Microsoft Azure environment. CISA believes threat actors may have gained access to client secrets for Commvault's Metallic Microsoft 365 (M365) backup SaaS solution hosted in Azure. This access could allow the threat actors to compromise Commvault's customers' M365 environments where application secrets are stored by Commvault.
The suspected campaign exploits default configurations and elevated permissions in cloud applications, making SaaS companies with weak security a prime target. The initial incident involved a zero-day vulnerability, CVE-2025-3928, in Commvault's Web Server, allowing remote, authenticated attackers to create and execute web shells. Commvault confirmed that Microsoft notified them of the unauthorized activity in February 2025, leading to an investigation and remediation efforts. Despite the breach, Commvault assured customers that there was no unauthorized access to their backup data, and they have rotated app credentials for M365 as a preventative measure. CISA has provided recommendations for users and administrators to mitigate such threats, including monitoring Entra audit logs for unauthorized modifications, reviewing Microsoft logs for suspicious activity, and implementing conditional access policies to restrict application service principal authentication to approved IP addresses. They also advise reviewing Application Registrations and Service Principals in Entra, restricting access to Commvault management interfaces, and deploying a Web Application Firewall to detect and block path-traversal attempts. These steps aim to strengthen the security posture of SaaS applications and prevent further exploitation of vulnerabilities. Recommended read:
References :
CISA@All CISA Advisories
//
The Cybersecurity and Infrastructure Security Agency (CISA) has issued an alert regarding cyber threat activity targeting Commvault's SaaS Cloud Application (Metallic), which is hosted in Microsoft Azure. CISA believes this activity may be part of a broader campaign aimed at SaaS companies exploiting default configurations and elevated permissions in their cloud applications. This warning comes after Commvault disclosed an incident where a nation-state threat actor, later identified as Silk Typhoon, gained unauthorized access to their Azure environment in February 2025, exploiting a zero-day vulnerability (CVE-2025-3928) in the Commvault Web Server.
Commvault confirmed that the objective of the attackers was to acquire app credentials that could be used to breach companies' M365 environments. While Commvault has taken remedial actions, including rotating app credentials for M365, they emphasized that there has been no unauthorized access to customer backup data. The zero-day vulnerability, now added to CISA's Known Exploited Vulnerabilities Catalog, allows remote, authenticated attackers to create and execute web shells, posing a significant risk to affected systems. The vulnerability requires authenticated credentials in order to make use of it. To mitigate these threats, CISA recommends that users and administrators closely monitor Entra audit logs for unauthorized modifications or additions of credentials to service principals initiated by Commvault applications. They also advise reviewing Microsoft logs (Entra audit, Entra sign-in, unified audit logs) and conducting internal threat hunting. Additionally, CISA suggests implementing conditional access policies that limit authentication of application service principals to approved IP addresses within Commvault's allowlisted range, restricting access to Commvault management interfaces, and deploying a Web Application Firewall to detect and block path-traversal attempts and suspicious file uploads. For single tenant apps, implement a conditional access policy that limits authentication of an application service principal to an approved IP address that is listed within Commvault's allowlisted range of IP addresses. Recommended read:
References :
Andres Ramos@Arctic Wolf
//
Versa Concerto, a network security and SD-WAN orchestration platform, is facing scrutiny after the public disclosure of multiple unpatched vulnerabilities. ProjectDiscovery researchers revealed technical details on May 21, 2025, following a 90-day responsible disclosure period that began on February 13, 2025. The disclosed flaws include authentication bypasses, remote code execution (RCE), and container escapes, posing a significant threat to the platform and its underlying host systems. The platform is a Spring Boot-based application deployed via Docker containers and routed through Traefik, making it vulnerable to attacks targeting these components.
These vulnerabilities, when chained together, could allow a complete system compromise. One notable flaw, CVE-2025-34027, carries a maximum severity score of 10.0 and involves a URL decoding inconsistency issue. This could facilitate unauthorized access to file upload endpoints and enable remote code execution. Other critical vulnerabilities include CVE-2025-34026, an authentication bypass allowing access to administrative endpoints, and CVE-2025-34025, a privilege escalation leading to Docker container escape and code execution on the host machine. Despite the disclosure of these vulnerabilities, Versa Networks has stated that patches were implemented in early March and made publicly available in mid-April. According to a Versa Networks spokesperson, all affected customers were notified through established security and support channels with guidance on applying the recommended updates, and there is no indication that these vulnerabilities were exploited in the wild. However, ProjectDiscovery researchers initially noted the lack of patches, prompting the need for public disclosure after the 90-day deadline passed. Recommended read:
References :
info@thehackernews.com (The@The Hacker News
//
Chinese-speaking hackers have exploited a zero-day vulnerability, CVE-2025-0994, in Trimble Cityworks software to breach multiple local governing bodies across the United States. This vulnerability, a remote code execution flaw, has been actively exploited since January 2025 by a threat actor tracked as UAT-6382. The attackers targeted enterprise networks of local governing bodies, conducting reconnaissance and deploying web shells and custom-made malware to maintain long-term access, with a particular interest in systems related to utilities management.
UAT-6382 utilized a variety of tools and techniques in their attacks. They rapidly deployed web shells such as AntSword and chinatso/Chopper on the underlying IIS web servers. Additionally, they employed Rust-based loaders, known as TetraLoader, to deliver Cobalt Strike and VShell malware, ensuring persistent access to compromised systems. The TetraLoader was built using MaLoader, a malware building framework written in Simplified Chinese, further indicating the origin of the threat actor. Cisco Talos researchers have assessed with high confidence that UAT-6382 is a Chinese-speaking threat actor, based on tooling, TTPs, hands-on-keyboard activity, and victimology. Indicators of compromise (IOCs) related to these intrusions overlap with those listed in Trimble’s advisory. The Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2025-0994 to its Known Exploited Vulnerabilities (KEV) catalog in February 2025. The exploitation of this flaw highlights the risk of nation-state actors targeting critical infrastructure software used by U.S. local governments and utilities. Recommended read:
References :
info@thehackernews.com (The@The Hacker News
//
References:
The Hacker News
, BleepingComputer
,
Researchers have revealed a significant security flaw affecting modern Intel CPUs, dubbed Branch Privilege Injection (BPI). This vulnerability allows unauthorized access to sensitive data from memory by misusing the CPU's branch prediction calculations. The flaw, which impacts all Intel processors, could enable attackers to read the contents of the processor's cache and the working memory of other users on the same CPU. This issue is related to Branch Predictor Race Conditions (BPRC), where an unprivileged hacker can exploit the processor's switching between prediction calculations for different users to bypass security barriers. Intel has released microcode patches to mitigate this vulnerability, identified as CVE-2024-45332.
Also discovered were Spectre v2-style attacks, named Training Solo, which exploit vulnerabilities tracked as CVE-2024-28956 and CVE-2025-24495 to leak kernel memory at a rate of up to 17 Kb/s. These hardware exploits can break domain isolation and re-enable traditional user-user, guest-guest, and even guest-host Spectre-v2 attacks. While Intel has provided microcode updates for these issues, AMD has revised its existing guidance on Spectre and Meltdown, highlighting the widespread impact of these CPU flaws on system security. Pwn2Own Berlin 2025 showcased the discovery of numerous zero-day vulnerabilities, awarding a total of $695,000 for 39 unique exploits. The competition featured successful attacks on critical software platforms, including VMware ESXi, Microsoft SharePoint, Oracle VirtualBox, Red Hat Enterprise Linux, and Mozilla Firefox. A notable exploit was Nguyen Hoang Thach's successful attack against VMware ESXi, earning $150,000 for an integer overflow exploit. Dinh Ho Anh Khoa of Viettel Cyber Security received $100,000 for hacking Microsoft SharePoint through an exploit chain, underscoring the persistent challenges in maintaining robust software security across various platforms. Recommended read:
References :
@msrc.microsoft.com
//
Microsoft has released its May 2025 Patch Tuesday updates, addressing a total of 71 or 72 vulnerabilities, depending on the source, across its software. This includes fixes for five actively exploited zero-day vulnerabilities and two publicly known vulnerabilities. The updates target flaws in various Windows components, including the Windows Common Log File System (CLFS), DWM Core Library, Scripting Engine, and Winsock.
Among the critical issues addressed are elevation of privilege (EoP) and remote code execution (RCE) vulnerabilities. Specifically, two zero-days in the CLFS (CVE-2025-32701 and CVE-2025-32706) allow attackers to gain SYSTEM privileges. Another zero-day (CVE-2025-30400) is a use-after-free vulnerability in the Windows Desktop Window Manager (DWM) Core Library, which can also lead to privilege escalation. A scripting engine memory corruption vulnerability (CVE-2025-30397) could allow for remote code execution if a user visits a malicious web page while using Internet Explorer mode in Edge. The Cybersecurity and Infrastructure Security Agency (CISA) has added all five exploited vulnerabilities to its Known Exploited Vulnerabilities Catalog, urging administrators to patch these flaws by June 3, 2025. Security experts emphasize the importance of prioritizing these updates to prevent potential privilege escalation, code execution, and other malicious activities. The identified vulnerabilities highlight the ongoing risk posed by CLFS exploitation and the need for continuous monitoring and patching efforts. Recommended read:
References :
Field Effect@Blog
//
Russian Ransomware-as-a-Service (RaaS) group Qilin exploited a critical SAP NetWeaver vulnerability, CVE-2025-31324, weeks before its public disclosure. This zero-day flaw, an unauthenticated file upload vulnerability, allowed attackers to gain remote code execution in affected enterprise environments across the globe. The vulnerability affects SAP NetWeaver Visual Composer, a component commonly deployed in large enterprise environments. The flaw lies in the `/developmentserver/metadatauploader` endpoint, which fails to properly enforce authentication and authorization, which allows an unauthenticated attacker to upload arbitrary files, including web shells, to the server with ease.
SAP assigned CVE-2025-31324 a CVSS score of 10.0, reflecting its trivial exploitation path and severe impact, including the potential for remote code execution and full system compromise. The vulnerability's accessibility, requiring no authentication and being exposed via standard HTTP(S), made it especially dangerous. OP Innovate discovered the active exploitation of CVE-2025-31324 during an incident response engagement for a major global enterprise, finding evidence of exploitation nearly three weeks before the vulnerability was publicly disclosed. OP Innovate's investigation revealed two separate exploitations of CVE-2025-31324 within a major enterprise environment. The first occurred nearly three weeks before the vulnerability was publicly disclosed, and the second shortly after. While recent articles pointed to China-Linked APTs, OP Innovate identified communication with known Cobalt Strike C2 infrastructure and IP addresses linked directly to Qilin. Organizations using SAP NetWeaver are urged to apply the necessary patches and monitor for potential exploitation attempts to mitigate risks and prevent further breaches. Recommended read:
References :
info@thehackernews.com (The@The Hacker News
//
A Türkiye-linked hacking group, tracked by Microsoft as Marbled Dust, has been exploiting a zero-day vulnerability, CVE-2025-27920, in the Output Messenger application since April 2024. This espionage campaign has targeted Kurdish military personnel operating in Iraq, resulting in the collection of related user data. The vulnerability impacts Output Messenger version 2.0.62 and involves a directory traversal flaw that allows remote attackers to access and execute arbitrary files. A fix was released by the developer, Srimax, in late December 2024 with version 2.0.63.
The attack chain commences with the threat actor gaining authenticated access to Output Messenger's Server Manager. It is suspected that Marbled Dust uses techniques like DNS hijacking or typosquatted domains to intercept the credentials required for authentication. This access is then abused to collect user credentials and exploit CVE-2025-27920 to drop malicious payloads. These payloads include scripts like "OM.vbs" and "OMServerService.vbs" into the server's startup folder, and an executable "OMServerService.exe" into the server's "Users/public/videos" directory. The final stage involves the execution of a multi-stage backdoor deployment. The "OMServerService.vbs" script is used to invoke "OM.vbs" and "OMServerService.exe." The latter is a Golang backdoor that connects to a hard-coded domain, "api.wordinfos[.]com," for data exfiltration. On the client side, the installer extracts and executes both the legitimate OutputMessenger.exe file and OMClientService.exe, another Golang backdoor. This client-side backdoor also connects to a Marbled Dust command-and-control (C2) domain, enabling further malicious activities. Recommended read:
References :
Ddos@securityonline.info
//
A critical vulnerability, CVE-2025-31324, affecting SAP NetWeaver is under active exploitation by China-linked Advanced Persistent Threat (APT) groups. This zero-day flaw, boasting a maximum CVSS score of 10.0, is an unauthenticated file upload vulnerability that grants attackers the ability to execute remote code on compromised systems. The vulnerability allows attackers to upload malicious files and gain unauthorized access, posing a significant threat to organizations relying on SAP systems and has led to breaches of critical systems worldwide.
Multiple Chinese hacking groups, including UNC5221, UNC5174, and CL-STA-0048, are leveraging CVE-2025-31324 to maintain persistent remote access, conduct reconnaissance, and deploy malicious programs. Attackers are exploiting this vulnerability to deploy web shells, maintain persistent access, and execute arbitrary commands on compromised systems. EclecticIQ researchers uncovered an exposed directory on attacker-controlled infrastructure, revealing that 581 SAP NetWeaver instances have already been compromised and backdoored with web shells. The targets of these attacks include critical infrastructure sectors globally, ranging from natural gas distribution networks and water management utilities to medical device manufacturing plants and government ministries. Organizations are urged to immediately apply the emergency patches released by SAP to mitigate the risk of exploitation. CISA has added CVE-2025-31324 to its Known Exploited Vulnerabilities Catalog, further emphasizing the urgency for organizations to address this critical flaw to protect their systems and data from potential compromise. Recommended read:
References :
|