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CVE-2023-29485

Heimdalsecurity Thor remote code execution

9.8 CRITICALEPSS 0.95%
  1. Published21 Dec 2023

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Heimdalsecurity Thor≤ 2.6.9 · ≤ 3.5.3

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Frequently asked

Is CVE-2023-29485 being actively exploited?

CVE-2023-29485 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.95%.

How severe is CVE-2023-29485?

CVE-2023-29485 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.95% probability of exploitation.

Which products are affected by CVE-2023-29485?

Affected products include Heimdalsecurity Thor.

How do I fix CVE-2023-29485?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-29485 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.