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CVE-2025-55177

Published: Aug 29, 2025Updated: Oct 24, 2025 Sources: CVE List NVD BDUCWE-863
5.4MEDIUM
NVD MITRE
EPSS Score
4.2%
Top 10.0%
CISA KEV
Active Exploitation
Since Sep 2, 2025
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-863

Affected Products

Facebook
commercial·USaka facebook inc., meta
WhatsApp Desktop for Mac
Communications
WhatsApp Business for iOS
Communications
WhatsApp for iOS
Communications
Meta Platforms Inc
commercial·USaka react-server-dom-parcel, facebook, hermes js, zstandard
WhatsApp DesktopLibrary
OSS Libraries / web-framework
WhatsApp Business for iOSLibrary
OSS Libraries / web-framework
WhatsApp for iOSLibrary
OSS Libraries / web-framework
whatsapp
commercialaka whatsapp business, whatsapp desktop
whatsappMobile App
Communications / messaging-chat
whatsapp businessSaaSMobile App
Communications / messaging-chat

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Sep 2, 2025
Remediation due:Sep 23, 2025

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.

Official Patch Available
Is your org exposed to CVE-2025-55177?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://www.facebook.com/security/advisories/cve-2025-55177
facebook.com
https://www.whatsapp.com/security/advisories/2025/
whatsapp.com
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55177
cisa.gov
and 2 more references View all →

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