CVE-2025-55177: Meta Platforms WhatsApp Incorrect Authorization Vulnerability

CISA Known Exploited Vulnerability (KEV)

Description

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.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://www.whatsapp.com/security/advisories/2025/ ; https://nvd.nist.gov/vuln/detail/CVE-2025-55177

Weakness behind it

CISA records this vulnerability as an instance of CWE-863. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.

References

• NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-55177
• KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog