CVE-2025-55177 — Meta Platforms WhatsApp Incorrect Authorization Vulnerability
Overview
Meta Platforms WhatsApp contains an incorrect authorization vulnerability due to an incomplete authorization of linked device synchronization messages. This vulnerability could allow an unrelated user to trigger processing of content from an arbitrary URL on a target’s device.
Vulnerability details
- CVE ID
- CVE-2025-55177
- Vulnerability
- Meta Platforms WhatsApp Incorrect Authorization Vulnerability
- Vendor
- Meta Platforms
- Affected products
- Meta Platforms: WhatsApp
- Severity
- HIGH
- Exploitation status
- Actively exploited in the wild (CISA KEV)
- Published
- 2025-09-02
Remediation guidance
CVE-2025-55177 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.
Apply the vendor's official security update for Meta Platforms the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.
Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.
Authoritative references
Remediate CVE-2025-55177 — and stay ahead of the next one
CVE-2025-55177 is listed in the CISA KEV catalog as actively exploited — treat remediation as urgent. Scan your domain free to see whether CVE-2025-55177 and other Meta Platforms issues affect you and get a prioritized remediation report (full report from ₹999) — or stream the full feed of 1,600+ actively-exploited CVEs straight into your SOC.
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