CyberSecurity news

FlagThis

@reliaquest.com //

Critical SAP NetWeaver Zero-Day Exploited in Wild

A critical zero-day vulnerability, CVE-2025-31324, has been discovered in SAP NetWeaver Visual Composer Metadata Uploader, posing a significant threat to organizations using the platform. The flaw stems from missing authorization checks on the `/developmentserver/metadatauploader` endpoint, allowing unauthenticated attackers to upload malicious files directly to the system. This unrestricted file upload vulnerability has a CVSS score of 10, indicating its critical severity and potential for widespread exploitation. Security researchers and threat hunters have already observed active exploitation in the wild, with threat actors using the vulnerability to drop web shell backdoors onto exposed systems.

Exploitation of CVE-2025-31324 enables attackers to gain unauthorized access and control over SAP systems. Threat actors are leveraging the vulnerability to upload web shells, facilitating remote code execution and further system compromise. These web shells allow attackers to execute commands, manage files, and perform other malicious actions directly from a web browser. According to SAP security platform Onapsis, the vulnerability can afford attackers the opportunity to take full control over SAP business data and processes, potentially leading to ransomware deployment and lateral movement within a network.

SAP has released an out-of-band emergency patch to address CVE-2025-31324, and organizations are strongly encouraged to apply the patch as soon as possible to mitigate the risk. ReliaQuest researchers also reported investigating multiple customer incidents involving JSP webshells uploaded via this vulnerability. Given the widespread active exploitation and the potential for significant impact, organizations should prioritize patching vulnerable systems and assessing them for any signs of compromise. Experts estimate that a significant percentage of internet-facing SAP NetWeaver systems may be vulnerable, highlighting the urgency of addressing this critical flaw.
Original img attribution: https://resources.reliaquest.com/image/upload/c_limit,w_1024,h_1024,f_webp,q_auto/v1745354715/042225-SAP-Exploit-blog-header-512x354_2x_mrimpt.png
ImgSrc: resources.relia

Share: bluesky twitterx--v2 facebook--v1 threads


References :
  • Threats | CyberScoop: CyberScoop article about SAP zero-day vulnerability under widespread active exploitation
  • securityaffairs.com: SecurityAffairs article about SAP NetWeaver zero-day allegedly exploited by an initial access broker.
  • The DefendOps Diaries: thedefendopsdiaries.com article on Addressing CVE-2025-31324: A Critical SAP NetWeaver Vulnerability
  • Tenable Blog: Tenable Blog post on CVE-2025-31324 zero day vulnerability in SAP NetWeaver being exploited in the wild.
  • BleepingComputer: SAP fixes suspected Netweaver zero-day exploited in attacks
  • reliaquest.com: ReliaQuest uncovers vulnerability behind SAP NetWeaver compromise
  • MSSP feed for Latest: SAP Patches Critical Zero-Day Vulnerability in NetWeaver Visual Composer
  • Blog: Max severity zero-day in SAP NetWeaver actively exploited
  • thehackernews.com: Threat actors are likely exploiting a new vulnerability in SAP NetWeaver to upload JSP web shells with the goal of facilitating unauthorized file uploads and code execution.
  • cyberscoop.com: SAP zero-day vulnerability under widespread active exploitation
  • www.cybersecuritydive.com: SAP NetWeaver zero-day vulnerability under widespread active exploitation.
  • www.scworld.com: SAP patches zero day rated 10.0 in NetWeaver
  • The Register - Security: Emergency patch for potential SAP zero-day that could grant full system control
  • Resources-2: Picus Security explains SAP NetWeaver Remote Code Execution Vulnerability
  • socradar.io: Critical SAP NetWeaver Vulnerability (CVE-2025-31324) Allows Unauthorized Upload of Malicious Executables
  • Strobes Security: When a vulnerability is rated 9.9 out of 10 on the CVSS scale, it deserves immediate attention. CVE-2025-31324 affects SAP NetWeaver AS Java, a platform many businesses rely on every...
  • strobes.co: When a vulnerability is rated 9.9 out of 10 on the CVSS scale, it deserves immediate attention. CVE-2025-31324 affects SAP NetWeaver AS Java, a platform many businesses rely on every...
  • The DefendOps Diaries: The DefendOps Diaries: Understanding and Mitigating the CVE-2025-31324 Vulnerability in SAP NetWeaver
  • Vulnerable U: SAP CVE-2025-31324 Targeted by Attackers
  • www.bleepingcomputer.com: Over 1,200 SAP NetWeaver servers vulnerable to actively exploited flaw
  • www.bleepingcomputer.com: SAP fixes suspected Netweaver zero-day exploited in attacks
  • BleepingComputer: Over 1,200 internet-exposed SAP NetWeaver instances are vulnerable to an actively exploited maximum severity unauthenticated file upload vulnerability that allows attackers to hijack servers.
  • Onapsis: Critical SAP Zero-Day Vulnerability Under Active Exploitation (CVE-2025-31324)
  • research.kudelskisecurity.com: Critical Vulnerability in SAP NetWeaver Visual Composer (CVE-2025-31324)
  • securityaffairs.com: U.S. CISA adds SAP NetWeaver flaw to its Known Exploited Vulnerabilities catalog
  • onapsis.com: In our SAP CVE-2025-31324 webinar learn how to assess exposure, patch critical vulnerabilities, and defend against active zero-day attacks on SAP systems.
  • research.kudelskisecurity.com: Research Kudelski Security Article on SAP NetWeaver Exploitation
  • Cyber Security News: SAP NetWeaver 0-Day Vulnerability Actively Exploited to Deploy Webshells
  • Caitlin Condon: Rapid7 MDR has observed in-the-wild exploitation of SAP NetWeaver Visual Composer CVE-2025-31324 in customer environments.
  • www.cybersecuritydive.com: Thousands are exposed and potentially vulnerable as researchers warn of widespread exploitation.
  • www.it-daily.net: Security experts have identified a serious security vulnerability in SAP NetWeaver that allows unauthorized access to company systems.
  • securityonline.info: CISA Adds SAP NetWeaver Zero-Day CVE-2025-31324 to KEV Database
  • redcanary.com: Critical vulnerability in SAP NetWeaver enables malicious file uploads
  • www.stormshield.com: Security alert SAP CVE-2025-31324: Stormshield Products Response
  • Rescana: Critical Zero-Day Vulnerability in SAP NetWeaver Visual Composer: CVE-2025-31324 Exploited in Manufacturing Attacks
  • SOC Prime Blog: CVE-2025-31324 Detection: SAP NetWeaver Zero-Day Under Active Exploitation Exposes Critical Systems to Remote Code Execution
  • Stormshield: Security alert SAP CVE-2025-31324: Stormshield Products Response
  • socprime.com: CVE-2025-31324 Detection: SAP NetWeaver Zero-Day Under Active Exploitation Exposes Critical Systems to Remote Code Execution
Classification: