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CVE-2026-3502

75
FAUCET Score

CVE-2026-3502 affects TrueConf Client, allowing attackers to deliver malicious updates due to a lack of integrity verification during the update process. This vulnerability carries a high CVSS score of 7.8, indicating a critical risk of arbitrary code execution if an attacker can intercept and substitute update payloads. It is actively exploited, as confirmed by its inclusion in CISA's KEV catalog and reports of its use in campaigns like "TrueChaos" targeting Southeast Asian governments. While no public exploit code is available, the vulnerability has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.5.3.884CPE matchmatch criteria
cpe:2.3:a:trueconf:trueconf:*:*:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
1.2
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.56%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Apr 2, 2026
This CVE's current EPSS score of 0.0556 is in the 100th percentile among its peer group of 8 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.6 Reddit, 5.0 Bluesky, 1.1 Mastodon, and 3.0 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

research.checkpoint.com / 2026/operation-truechaos-0-day-exploitation-against-southeast-asian-government-targets
Third Party Advisory
cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
trueconf.com / blog/update/trueconf-8-5
ProductRelease Notes