CVE-2026-3502KEV · OVERDUECWE-494

TrueConf Client Update Integrity Verification Bypass

High · published March 30, 2026

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.8. It is confirmed in active exploitation. It sits in the 24.7th percentile for exploit probability.

190
days past CISA
deadline
CVSS v3.1
7.8
EPSS
0%
Percentile
24.7
In the wild
Confirmed
What it is

TrueConf Client downloads application update code and applies it without performing verification. 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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00329 · 24.7th percentile
Weakness
CWE-494 · Download of Code Without Integrity Check
Published
2026-03-30T18:05Z
KEV added
2026-04-02 · due 2026-04-16
EPSS history
Timeline
  • 02 APR 00:00Z
    Added to CISA KEV — remediate by Apr 16
    kev
  • 30 MAR 18:05Z
    TrueConf Client Update Integrity Verification Bypass
    cvelistv5