CVE Watch8 oct 2026

CVE-2025-55177

Meta Platforms WhatsApp Incorrect Authorization Vulnerability

CVSS

5.4

Medio

EPSS

4.7%

p92

KEV

SÍ

2 sept 2025

Exploit Today

0-100

Publicado: 29 ago 2025 · Última mod.: 8 oct 2026 · CWE-863

EPSS · 30d

4.2%EPSS · 30 días4.7%

2026-09-172026-10-15

Ficha del catálogo KEV

Producto

Meta Platforms / WhatsApp

Vulnerabilidad

Meta Platforms WhatsApp Incorrect Authorization Vulnerability

Añadido a KEV

2 sept 2025

Remediar antes de

23 sept 2025

Uso conocido en ransomware

Descripción resumida

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.

Acción requerida

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

Notas

https://www.whatsapp.com/security/advisories/2025/ ; https://nvd.nist.gov/vuln/detail/CVE-2025-55177

Descripción técnica

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.

Referencias oficiales

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