CVE-2026-40955: low-severity vulnerability in Absolute Security Secure Access
Integer underflow vulnerability in Secure Access clients
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.1epss 0.3%
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.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
Absolute Security · Secure AccessRelated CVEs — Absolute Security Secure Access
In the same product, most dangerous first.
CVE-2025-49081MEDIUMInput validation vulnerability in the Secure Access prior to version 13.55EPSS 0.5%CVE-2025-49083HIGHData deserialization vulnerability in the Secure Access administrative console of Absolute Secure Access prior to version 13.56EPSS 0.4%CVE-2026-40957MEDIUMFrameable content vulnerability in the Secure Access server login pageEPSS 0.4%CVE-2026-55402HIGHCVE-2026-55402EPSS 0.4%CVE-2026-33445HIGHMemory management vulnerability in Secure Access serversEPSS 0.4%CVE-2026-55401MEDIUMCVE-2026-55401EPSS 0.4%