CVE-2026-55401

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-13 · updated 2026-09-04
Weakness: CWE-476

Description

CVE-2026-55401 is a null dereference vulnerability on the load-balancing sub-system of Secure Access servers prior to 14.57. Attackers can send an unauthenticated packet to a Secure Access server with load balancing enabled, which results in the internal load balancer crashing. After a successful attack, the Secure Access server is still able to accept connections and is still able to issue a failover to connected clients. ‍ https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Affected products

Absolute Security Secure Access: before 14.57 — fixed in 14.57

How to fix

Upgrade to a fixed version: Absolute Security Secure Access 14.57. Check the vendor advisory for mitigations.

References

https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-55401

Get alerted when CVE-2026-55401 or the next vulnerability affects your stack