AEGLIX vulnerability intelligence
CVE-2025-55177
MEDIUM · CVSS 5.4 · Analyzed
Published: 2025-08-29 · Updated: 2026-10-18 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 5.4 · MEDIUM
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Weaknesses
- CWE-863
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Meta Platforms · WhatsApp
- Added to catalog
- 2025-09-02
- 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.
- CISA remediation due date
- 2025-09-23
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:*
From (inclusive): 2.22.25.2
Before (exclusive): 2.25.21.73
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:macos:*:*
From (inclusive): 2.22.25.2
Before (exclusive): 2.25.21.78
cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:*
From (inclusive): 2.22.25.2
Before (exclusive): 2.25.21.78
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- 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