Vulnerability Intelligence Report
Meta Platforms WhatsApp Incorrect Authorization Vulnerability
CVE-2025-55177
Incomplete authorization of linked device synchronization messages in WhatsApp for iOS prior to v2.25.21.73, WhatsApp Business for iOS v2.25.21.78, and WhatsApp for Mac v2.25.21.78 could have allowed an unrelated user to trigger processing of content from an arbitrary URL on a target’s device. We assess that this vulnerability, in combination with an OS-level vulnerability on Apple platforms (CVE-2025-43300), may have been exploited in a sophisticated attack against specific targeted users.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
5.4
MEDIUM
Exploitability:2.9
Impact Score:2.6
EPSS Probability:4.12%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-863 ↗Incorrect Authorization (CWE-863)
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| WhatsApp Desktop for Mac | 2.22.25.2 < 2.25.21.78 (affected) | |
| WhatsApp Business for iOS | 2.22.25.2 < 2.25.21.78 (affected) | |
| WhatsApp for iOS | 2.22.25.2 < 2.25.21.73 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | |
| Reserved | 2025-08-08T18:21:47 |
| Published | 2025-08-29T15:50:28 |
| Last Updated | 2026-02-26T17:47:48 |
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