Absolute Security Secure Access up to 14.54 Certificate Parsing heap-based overflow

Summaryinfo

A vulnerability classified as problematic has been found in Absolute Security Secure Access up to 14.54. The affected element is an unknown function of the component Certificate Parsing. The manipulation leads to heap-based overflow. This vulnerability is referenced as CVE-2026-40953. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in Absolute Security Secure Access up to 14.54. It has been rated as problematic. This issue affects some unknown processing of the component Certificate Parsing. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is availability. The summary by CVE is:

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.

The advisory is shared at absolute.com. The identification of this vulnerability is CVE-2026-40953 since 04/16/2026. The exploitation is known to be easy. An attack has to be approached locally. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 14.55 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-44784). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Absolute Security

Name

• Secure Access

Version

• 14.0
• 14.1
• 14.2
• 14.3
• 14.4
• 14.5
• 14.6
• 14.7
• 14.8
• 14.9
• 14.10
• 14.11
• 14.12
• 14.13
• 14.14
• 14.15
• 14.16
• 14.17
• 14.18
• 14.19
• 14.20
• 14.21
• 14.22
• 14.23
• 14.24
• 14.25
• 14.26
• 14.27
• 14.28
• 14.29
• 14.30
• 14.31
• 14.32
• 14.33
• 14.34
• 14.35
• 14.36
• 14.37
• 14.38
• 14.39
• 14.40
• 14.41
• 14.42
• 14.43
• 14.44
• 14.45
• 14.46
• 14.47
• 14.48
• 14.49
• 14.50
• 14.51
• 14.52
• 14.53
• 14.54

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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