Meta Platforms WhatsApp
YES - ON THE CISA KEV LIST
CVE-2025-55177
Meta Platforms WhatsApp Incorrect Authorization Vulnerability
overdue since 2025-09-23
Meta Platforms: 3 entries (0.2% of all KEV entries are from this vendor); 0 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
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
References
Other KEV entries for this vendor: Meta Platforms
- CVE-2019-18426 - WhatsApp (2022-05-23)
- CVE-2019-3568 - WhatsApp (2022-04-19)
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