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CVE-2026-3502: TrueConf Client Download of Code Without Integrity Check Vulnerability

criticalknown exploitedCVE-2026-3502
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: TrueConfproduct: TrueConf ClientRemote code execution
What
TrueConf Client contains a download of code without integrity check vulnerability that may result in arbitrary code execution.
Who is affected
Users of TrueConf Client who can influence the update delivery path.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Install the latest update from TrueConf.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2026-04-02
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-3502

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-3502coverage & exploitation statusNVD · CVE.org

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