CVE-2026-40955: secure access Integer Underflow — Fix

Description

CVE-2026-40955 is an integer underflow vulnerability in the traffic parsing function of Secure Access clients prior to 14.55. Attackers with intimate knowledge of and total control over the tunnel protocol can create a non-persistent DoS against their client.

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CVSS v3.1 Score

3.7

LOW

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

EPSS — Exploit Prediction

0.0020

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-191 CWE-191

Affected Products

Vendor	Product	Versions
absolute	secure_access	< 14.55

References

Advisories & Patches

https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-40955

Frequently Asked Questions

What is CVE-2026-40955? +

CVE-2026-40955 is an integer underflow vulnerability in the traffic parsing function of Secure Access clients prior to 14.55. Attackers with intimate knowledge of and total control over the tunnel protocol can create a non-persistent DoS against their client. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2026-40955? +

CVE-2026-40955 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0020, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-40955? +

CVE-2026-40955 affects products from absolute, specifically: secure_access. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-40955? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-40955