# CVE-2026-72529: TrueConf Server Missing Authentication for Critical Function Vulnerability

- Exploited (CISA KEV): yes, added 2026-08-20
- Published: 2026-08-19
- CVSS: 9.3 CRITICAL (v4.0)
- EPSS: 1.5% (74th percentile)
- CWE: CWE-306

A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server versions 5.3.X to 5.3.9, 5.4.X to 5.4.9, 5.5.X to 5.5.5, and earlier could execute an arbitrary script by calling an undocumented function.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2026-72529 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-72529