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

> CVE-2025-55177: Meta Platforms WhatsApp Incorrect Authorization Vulnerability. CVSS 5.4 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2025-55177
Last updated: 2026-10-18T21:10:00Z

- Published: 2025-08-29 15:50 UTC · Updated: 2026-10-18 21:10 UTC · Assigner: facebook
- CVSS: 5.4 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C
- EPSS: 13.1%, 96th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-09-02, federal due date 2025-09-23, ransomware use: Unknown

## Description

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 required action

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

## Affected vendors and products

- Facebook: WhatsApp Business for iOS
- Facebook: WhatsApp Desktop for Mac
- Facebook: WhatsApp for iOS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-55177)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-55177)
- [https://www.facebook.com/security/advisories/cve-2025-55177](https://www.facebook.com/security/advisories/cve-2025-55177)
- [https://www.whatsapp.com/security/advisories/2025/](https://www.whatsapp.com/security/advisories/2025/)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-55177 · Markdown: https://rewindex.com/cve/CVE-2025-55177.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-55177 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:04:51.877Z