CISA Flags Critical TrueConf Vulnerability Under Active Attack

CISA flags TrueConf vulnerability CVE-2026-3502, urging urgent patches to prevent system hijack via fake updates.

Apr 6, 2026

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CISA added a dangerous TrueConf software vulnerability (CVE-2026-3502) to its Known Exploited Vulnerabilities catalog after detecting active attacks. The flaw lets hackers hijack software updates by replacing legitimate files with malicious code, potentially giving attackers full system control.

The vulnerability affects TrueConf Client's update process, which fails to verify file authenticity. When users update their software, attackers can substitute malware that executes with full privileges.

Federal agencies must patch by April 16, 2026, under mandatory security directives. CISA recommends immediately applying vendor patches or discontinuing TrueConf if fixes aren't available. Private organizations should also patch urgently, as the flaw creates an easy entry point for ransomware and data theft.

Source: Cybersecurity News

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