CVE-2026-55402 Denial of service in Secure Access
An attacker in a man-in-the-middle position can cause a persistent denial of service on Secure Access servers via out-of-bounds read.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-55402?
CVE-2026-55402 is a high-severity denial of service vulnerability in Absolute Secure Access, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
CVE-2026-55402 is an out of bounds read vulnerability in Secure Access servers prior to version 14.57. Attackers with an ‘in the middle’ position can send specially crafted data to a server causing a persistent denial of service.
Weakness: CWE-125
Which versions are affected by CVE-2026-55402?
It affects 1 product.
Products include Absolute Secure Access.
How do I fix CVE-2026-55402?
No fix has been published for CVE-2026-55402 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-55402 being exploited?
There is no known exploitation of CVE-2026-55402 in the wild and no public exploit code.
Other vulnerabilities in Absolute Secure Access
- CVE-2026-33445 Memory management vulnerability in Secure Access servers
- CVE-2025-49080 Memory management vulnerability in Absolute Secure Access server versions 9.0 to 13.54
- CVE-2026-40952 Privilge misconfiguration in Secure Access installers
- CVE-2026-33451 Arbitrary read/write vulnerability in Windows clients prior to 14.50
- CVE-2025-59595 Denial of service in Secure Access
Sources
Also known as GHSA-fwr3-5whq-67v9.