PT-2025-54213 · Trueconf · Trueconf Client

X00Nullbit · Published 2025-12-30 · Updated 2026-01-02 · CVE-2025-66835

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions TrueConf Client version 8.5.2

Description The software is susceptible to a DLL hijacking issue. A crafted wfapi.dll file can be used by a local attacker to execute arbitrary code with the privileges of the user. The attack involves exploiting a weakness in how the application loads dynamic link libraries.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, ensure the application directory and its subdirectories have restricted permissions to prevent unauthorized modification of DLL files.

Exploit

Fix

LPE

Uncontrolled Search Path Element

Weakness Enumeration

CWE-427

Related Identifiers

BDU:2026-04787

CVE-2025-66835

Affected Products

Trueconf Client

References · 9

• 🔥 https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66835/README.md · Exploit
• https://bdu.fstec.ru/vul/2026-04787 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-66835 · Security Note
• https://osv.dev/vulnerability/CVE-2025-66835 · Vendor Advisory
• https://twitter.com/CVEnew/status/2006861553128058970 · Twitter Post
• https://t.me/cveNotify/147530 · Telegram Post
• http://trueconf.com · Note
• https://twitter.com/VulmonFeeds/status/2006159099826708812 · Twitter Post
• https://t.me/CVEtracker/40991 · Telegram Post