How severe is CVE-2025-66835?

CVE-2025-66835 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-66835 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66835?

CVE-2025-66835 affects Trueconf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66835?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-66835 have an EU (EUVD) identifier?

Yes. CVE-2025-66835 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205841.

When was CVE-2025-66835 published?

CVE-2025-66835 was published on 2025-12-30 and last updated on 2026-07-05.

CVE-2025-66835

CVE-2025-66835 is a high-severity vulnerability in Trueconf with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-427.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-205841
Weakness: CWE-427
Affected product: Trueconf
Published: 2025-12-30
Last modified: 2026-07-05

Description

TrueConf Client 8.5.2 is vulnerable to DLL hijacking via crafted wfapi.dll allowing local attackers to execute arbitrary code within the user's context.

Frequently asked questions

What is CVE-2025-66835?: TrueConf Client 8.5.2 is vulnerable to DLL hijacking via crafted wfapi.dll allowing local attackers to execute arbitrary code within the user's context.
How severe is CVE-2025-66835?: CVE-2025-66835 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-66835 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66835?: CVE-2025-66835 affects Trueconf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66835?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-66835 have an EU (EUVD) identifier?: Yes. CVE-2025-66835 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205841.
When was CVE-2025-66835 published?: CVE-2025-66835 was published on 2025-12-30 and last updated on 2026-07-05.

References

https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66835/README.md

EU advisories (EUVD)

http://trueconf.com

Affected products (1)

cpe:2.3:a:trueconf:trueconf:8.5.2:*:*:*:*:*:*:*

More vulnerabilities in Trueconf

CVE-2026-3502 — High (CVSS 7.8): TrueConf Client downloads application update code and applies it without performing verification. An attacker who is…

All CVEs affecting Trueconf →

Other CWE-427 (Uncontrolled Search Path Element) vulnerabilities

CVE-2025-4981 — Critical (CVSS 9.9): Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to…
CVE-2025-69599 — Critical (CVSS 9.8): RayVentory Scan Engine through 12.6 Update 8 allows attackers to gain privileges if they control the value of the PATH…
CVE-2019-25268 — Critical (CVSS 9.8): NREL BEopt 2.8.0.0 contains a DLL hijacking vulnerability that allows attackers to load arbitrary libraries by tricking…
CVE-2023-53959 — Critical (CVSS 9.8): FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by…
CVE-2025-65741 — Critical (CVSS 9.8): Sublime Text 3 Build 3208 or prior for MacOS is vulnerable to Dylib Injection. An attacker could compile a .dylib file…
CVE-2024-23054 — Critical (CVSS 9.8): An issue in Plone Docker Official Image 5.2.13 (5221) open-source software that could allow for remote code execution…

Browse all CWE-427 (Uncontrolled Search Path Element) vulnerabilities →