CVE-2023-29485

Name: CVE-2023-29485
Creator: NVD / NIST
Published: 2023-12-21T01:15:32.7+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.96%

Last modified Jun 17, 2026

CVE-2023-29485 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in Heimdal Thor agent versions 3.4.2 and before on Windows and 2.6.9 and before on macOS, allows attackers to bypass network filtering, execute arbitrary code, and obtain sensitive information via DarkLayer Guard threat prevention module. NOTE: Heimdal disputes the validity of this issue arguing that their DNS Security for Endpoint filters DNS traffic on the endpoint by intercepting system-generated DNS requests. EPSS estimates a 0.96% chance of exploitation in the next 30 days.

Description

An issue was discovered in Heimdal Thor agent versions 3.4.2 and before on Windows and 2.6.9 and before on macOS, allows attackers to bypass network filtering, execute arbitrary code, and obtain sensitive information via DarkLayer Guard threat prevention module. NOTE: Heimdal disputes the validity of this issue arguing that their DNS Security for Endpoint filters DNS traffic on the endpoint by intercepting system-generated DNS requests. The product was not designed to intercept DNS requests from third-party solutions.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.96%

57.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Heimdalsecurity	Thor	<= 3.5.3
Heimdalsecurity	Thor	<= 2.6.9

References

https://medium.com/%40drabek.a/weaknesses-in-heimdal-thors-line-of-products-9d0e5095fb93Exploit, Third Party Advisory
https://medium.com/%40drabek.a/weaknesses-in-heimdal-thors-line-of-products-9d0e5095fb93Exploit, Third Party Advisory

Timeline

Published: Dec 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-29485?

How severe is CVE-2023-29485?

CVE-2023-29485 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.96% probability of exploitation in the next 30 days.

How do I fix CVE-2023-29485?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-29485?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST