MSRXCVE-2026-72529
CVE-2026-72529
TrueConf Server Missing Authentication for Critical Function Vulnerability
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CVSS 4.0 · CNA · kaspersky.com
chance of exploitation in the next 30 days (EPSS; higher than 73% of CVEs)
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.
Scores
Affected products
- trueconf trueconf server: < 5.3.9.10013; < 5.3.9.10015; ≥ 5.4.0.12689, < 5.4.9.10072; ≥ 5.4.0.12700, < 5.4.9.10019; ≥ 5.5.0.13826, < 5.5.5.10010; ≥ 5.5.0.13828, < 5.5.5.10009
Weakness: CWE-306
3 references (advisories, patches, write-ups)
- https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-missing-authentication-for-critical-function/ · Third Party Advisory
- https://securelist.com/tr/head-mare-targets-trueconf-server-with-phantomcore/120988/ · Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-72529 · US Government Resource
Sources: NVD, CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.