A recently discovered high-severity security flaw in the TrueConf client video conferencing software has been exploited by attackers as a zero-day vulnerability, targeting government entities in Southeast Asia as part of a campaign known as TrueChaos.

The vulnerability, identified as CVE-2026-3502 with a CVSS score of 7.8, arises from a lack of integrity check when fetching application update code, allowing an attacker to distribute a tampered update, potentially leading to malicious code execution.

This exploitation highlights the importance of robust security measures in video conferencing software, especially in sensitive environments such as government networks, where the confidentiality and integrity of communications are paramount.

TrueChaos, the campaign leveraging this zero-day, underscores the evolving nature of cyber threats and the need for continuous monitoring and updating of software to prevent such attacks.

Organizations using the TrueConf video conferencing software are advised to apply the latest security patches as soon as possible to mitigate the risk associated with CVE-2026-3502.

Source: Original Article