The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in TrueConf Client to its Known Exploited Vulnerabilities catalog The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a flaw in TrueConf Client, tracked as CVE-2026-3502 (CVSS score of 7.8), to its Known Exploited Vulnerabilities (KEV) catalog. TrueConf is a videoconferencing platform often used in secure, offline […]

CISA has added one new vulnerability to its  Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation.  CVE-2026-3502  TrueConf Client Download of Code Without Integrity Check Vulnerability  This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise.  Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities  established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the  BOD 22-01 Fact Sheet  for more information.  Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of  KEV Catalog vulnerabilities  as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the  specified criteria . 

TrueConf Client contains a download of code without integrity check vulnerability. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.

A high-severity security flaw in the TrueConf client video conferencing software has been exploited in the wild as a zero-day as part of a campaign targeting government entities in Southeast Asia dubbed TrueChaos. The vulnerability in question is CVE-2026-3502 (CVSS score: 7.8), a lack of integrity check when fetching application update code, allowing an attacker to distribute a tampered update,