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CVE-2026-40953

4.4 · MEDIUM

CVE-2026-40953 is a heap overflow in the certificate parsing function of Secure Access clients prior to 14.55.

Published Jul 15, 2026CWE-787EPSS 0.10%

Overview

CVE-2026-40953 is a medium-severity vulnerability. It was published on July 15, 2026 and has a CVSS 3.1 base score of 4.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

CVE-2026-40953 is a heap overflow in the

certificate parsing function of Secure Access clients prior to 14.55. Attackers

with local access and administrator permissions can create a denial of service

attack against the client over which they have control.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.absolute.com/platform/security-information/vulnerability-archive/cve-2026-40953

How CyberStrike helps

Frequently asked questions

What is CVE-2026-40953?

CVE-2026-40953 is a medium-severity vulnerability. It was published on July 15, 2026 and has a CVSS 3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2026-40953?

This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-40953?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-40953?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-40953 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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