How to check if you are exposed to CVE-2025-55177
- Find every Meta Platforms WhatsApp system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2025-55177.
US federal agencies had to fix this by 2025-09-23. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Affected versions
Versions the National Vulnerability Database lists as vulnerable to CVE-2025-55177. Check the vendor advisory for the exact fixed builds before you sign anything off.
| Product | Vulnerable versions |
|---|---|
| from 2.22.25.2 before 2.25.21.73; from 2.22.25.2 before 2.25.21.78 | |
| Whatsapp Business | from 2.22.25.2 before 2.25.21.78 |
Timeline
- · Published in the National Vulnerability Database
- · Added to CISA's Known Exploited Vulnerabilities catalog, 4 days after it was published
- · Fix-by date for US federal agencies, passed 404 days ago
Vendor advisories and fixes
Weakness type
More exploited Meta Platforms vulnerabilities
CISA lists 3 exploited Meta Platforms vulnerabilities. The closest matches:
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.