CVE-2026-40958: low-severity vulnerability in Absolute Security Secure Access
Input validation error in Secure Access clients prior to 14.55
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 2.3epss 0.4%
CVE-2026-40958
is a input validation error in 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:L/AT:P/PR:N/UI:P/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%