All vulnerabilities
CVE-2025-55177

Meta Platforms WhatsApp Incorrect Authorization Vulnerability

Meta Platforms WhatsAppApplications & CMS
Open in ThreatlineRecord JSON
CVSS
5.4Medium
ExploitationExploited in the wildAdded to KEV 2 Sep 2025CISA KEV
Exploit odds (EPSS)4.73%Chance of exploitation activity in the next 30 days, higher than 91% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2.25.21.78Also 2.25.21.73CVE List
Federal deadline23 Sep 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 29 Aug 2025, 15:50 UTCPublishedCVE List
  2. 2 Sep 2025Added to CISA KEVCISA 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.

Text from CVE List

Affected versions 3

  • WhatsApp Desktop for Macaffected: 2.22.25.2 before 2.25.21.78CVE List
  • WhatsApp Business for iOSaffected: 2.22.25.2 before 2.25.21.78CVE List
  • WhatsApp for iOSaffected: 2.22.25.2 before 2.25.21.73CVE List

References 4