Is CVE-2026-40953 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-40953 being exploited in the wild.

How severe is CVE-2026-40953?

Informational severity, with a CVSS score of 6.7, published 15 July 2026.

Which products and versions are affected?

Absolute Security Secure Access prior to 14.55.

Is there a fix for CVE-2026-40953?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-40953 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2026-40953?

Check whether you run Absolute Security Secure Access at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-40953: Absolute Security Secure Access heap overflow in certificate parsing

CVE-2026-40953 · Severity: info · CVSS 6.7 · Published 2026-07-15

Absolute Security Secure Access is a client application used to provide secure remote connectivity for mobile workers. A vulnerability in how the software processes security certificates could allow a user who already has administrative access to the device to crash the connection client. While this results in a denial of service for that specific user, it requires high-level local permissions to execute.

Technologies: Absolute Security Secure Access. Vendors: Absolute Security.

Quick answers

Is CVE-2026-40953 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-40953 being exploited in the wild.
How severe is CVE-2026-40953?: Informational severity, with a CVSS score of 6.7, published 15 July 2026.
Which products and versions are affected?: Absolute Security Secure Access prior to 14.55.
Is there a fix for CVE-2026-40953?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-40953 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-40953?: Check whether you run Absolute Security Secure Access at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A heap-based buffer overflow exists in the certificate parsing function of Absolute Security (formerly NetMotion) Secure Access clients. The vulnerability is triggered when the client processes a specially crafted certificate. An attacker must have local access to the machine and possess administrator-level privileges to exploit this flaw. Successful exploitation results in a denial of service (DoS) by crashing the Secure Access client. The issue is resolved in client versions 14.55 and later.

Affected products

Absolute Security (formerly NetMotion) Secure Access prior to 14.55

Timeline

2026-07-15: advisory
2026-07-15: disclosed

References

https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-40953

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