Is CVE-2025-55177 actively exploited?

Yes. CVE-2025-55177 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2025-55177 be exploited remotely?

The attack vector of CVE-2025-55177 has not been classified yet.

What is the CVSS score of CVE-2025-55177?

CVE-2025-55177 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2025-55177

HIGHCISA KEVIN THE WILD

CVE-2025-55177

Published: September 2, 2025

EPSS:0.95%probability of exploitation in 30 daysPercentile:76.0th

Official 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.

NVD Source

CISA KEV Advisory

Meta Platforms WhatsApp Incorrect Authorization Vulnerability

Added to KEV: 2025-09-02Federal patch deadline: 2025-09-23

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.

Risk Analysis

This high-severity vulnerability in Meta Platforms WhatsApp stems from incomplete authorization in linked device synchronization messages, allowing an unrelated user to trigger content processing from an arbitrary URL on a target's device. While a CVSS score is not available, its inclusion in CISA's KEV catalog and an EPSS score of 0.00948 indicate a confirmed and notable exploitation risk.

This vulnerability has been actively exploited in the wild, as confirmed by its presence in CISA's Known Exploited Vulnerabilities catalog.

Recommended Action

Update Meta Platforms WhatsApp to the latest version to mitigate this authorization bypass vulnerability. Users should also be cautious about clicking on suspicious links or messages.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2025-55177 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2025-55177 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.