CVE-2025-55177

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.facebook.com/security/advisories/cve-2025-55177	Vendor Advisory
https://www.whatsapp.com/security/advisories/2025/	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55177	US Government Resource

Configurations

Configuration 1 (hide)

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

History

18 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Autorización incompleta de mensajes de sincronización de dispositivos vinculados en WhatsApp para iOS anterior a la v2.25.21.73, WhatsApp Business para iOS v2.25.21.78 y WhatsApp para Mac v2.25.21.78 podría haber permitido a un usuario no relacionado activar el procesamiento de contenido desde una URL arbitraria en el dispositivo de un objetivo. Evaluamos que esta vulnerabilidad, en combinación con una vulnerabilidad a nivel de sistema operativo en plataformas Apple (CVE-2025-43300), podría haber sido explotada en un ataque sofisticado contra usuarios específicos y dirigidos.

Information

Published : 2025-08-29 16:15

Updated : 2026-10-18 21:10

NVD link : CVE-2025-55177

Mitre link : CVE-2025-55177

CVE.ORG link : CVE-2025-55177

JSON object : View

Products Affected

whatsapp

whatsapp
whatsapp_business

CWE

CWE-863

Incorrect Authorization

{"id": "CVE-2025-55177", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-55177", "role": "CISA Coordinator", "options": [{"exploitation": "active"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2025-08-30T03:55:35.684164Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve-assign@fb.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cve-assign@fb.com", "affectedData": [{"vendor": "Facebook", "product": "WhatsApp Desktop for Mac", "versions": [{"status": "affected", "version": "2.22.25.2", "lessThan": "2.25.21.78", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Facebook", "product": "WhatsApp Business for iOS", "versions": [{"status": "affected", "version": "2.22.25.2", "lessThan": "2.25.21.78", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Facebook", "product": "WhatsApp for iOS", "versions": [{"status": "affected", "version": "2.22.25.2", "lessThan": "2.25.21.73", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2025-08-29T16:15:36.723", "references": [{"url": "https://www.facebook.com/security/advisories/cve-2025-55177", "tags": ["Vendor Advisory"], "source": "cve-assign@fb.com"}, {"url": "https://www.whatsapp.com/security/advisories/2025/", "tags": ["Vendor Advisory"], "source": "cve-assign@fb.com"}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55177", "tags": ["US Government Resource"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-863"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "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\u2019s 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."}, {"lang": "es", "value": "Autorizaci\u00f3n incompleta de mensajes de sincronizaci\u00f3n de dispositivos vinculados en WhatsApp para iOS anterior a la v2.25.21.73, WhatsApp Business para iOS v2.25.21.78 y WhatsApp para Mac v2.25.21.78 podr\u00eda haber permitido a un usuario no relacionado activar el procesamiento de contenido desde una URL arbitraria en el dispositivo de un objetivo. Evaluamos que esta vulnerabilidad, en combinaci\u00f3n con una vulnerabilidad a nivel de sistema operativo en plataformas Apple (CVE-2025-43300), podr\u00eda haber sido explotada en un ataque sofisticado contra usuarios espec\u00edficos y dirigidos."}], "lastModified": "2026-10-18T21:10:00.120", "cisaActionDue": "2025-09-23", "cisaExploitAdd": "2025-09-02", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:*", "vulnerable": true, "matchCriteriaId": "AD89DE9C-CE23-499F-8436-3DA8B2A2ECF4", "versionEndExcluding": "2.25.21.73", "versionStartIncluding": "2.22.25.2"}, {"criteria": "cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:macos:*:*", "vulnerable": true, "matchCriteriaId": "CA1A1B3A-90A5-4EA1-AC4B-715127CE9DE7", "versionEndExcluding": "2.25.21.78", "versionStartIncluding": "2.22.25.2"}, {"criteria": "cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:*", "vulnerable": true, "matchCriteriaId": "5DE9273B-2DA9-4BCE-8840-CB0B63163646", "versionEndExcluding": "2.25.21.78", "versionStartIncluding": "2.22.25.2"}], "operator": "OR"}]}], "sourceIdentifier": "cve-assign@fb.com", "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.", "cisaVulnerabilityName": "Meta Platforms WhatsApp Incorrect Authorization Vulnerability"}