vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2025-55177

MEDIUM
5.4
CVSS Score
Published: August 29, 2025 at 03:50 PM UTC
Updated: October 18, 2026 at 09:10 PM UTC
2 products affected across 1 vendorWhatsAppWhatsapp Business

Using WhatsApp Desktop for Mac by Facebook?

Get instant alerts when new vulnerabilities affect WhatsApp Desktop for Mac - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.4
Exploitation
CISA KEV
Exploit prediction
EPSS 14%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score13.5%

EPSS (Exploit Prediction Scoring System) estimates a 13.5% chance this CVE is exploited in the wild within the next 30 days — higher than 96% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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.

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.
Ransomware Use
Unknown
Added to KEV
Sep 2, 2025
Remediation Due
Sep 23, 2025
405 days overdue
Notes
https://www.whatsapp.com/security/advisories/2025/
https://nvd.nist.gov/vuln/detail/CVE-2025-55177

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

WhatsApp· Whatsapp
95%
2.22.25.2 ≤ v < 2.25.21.732.22.25.2 ≤ v < 2.25.21.782.22.25.2
Affected range stops below 2.25.21.73, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.25.21.78, so it looks safe — our inference, not a vendor statement
Whatsapp Business· Whatsapp
95%
2.22.25.2 ≤ v < 2.25.21.782.22.25.2
Affected range stops below 2.25.21.78, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.facebook.com/security/advisories/cve-2025-55177
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.whatsapp.com/security/advisories/2025/
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55177

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMfacebook
Vector?

Quick Info

StatusANALYZED
CWE
CWE-863

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card