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CVE-2025-55177

5.4 medium KEV · due 2025-09-23 exploit SSVC exploitation: active Analyzed
NVD · CVE.org · CISA KEV

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.

Fix

Public exploits 1

Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.

CISA KEV required action · due 2025-09-23

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

Added to the catalog 2025-09-02. CISA KEV

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.4 · in KEV · whatsappNVD modified 2026-10-08 10:35

Affected (CPE criteria) 3

  • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:*
  • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:macos:*:*
  • cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:*

References 3