CVE-2026-55400 Integer overflow in Secure Access
Authenticated attackers can cause persistent denial of service via integer underflow in Secure Access servers with non-default configurations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-55400?
CVE-2026-55400 is a medium-severity vulnerability in Absolute Secure Access, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
CVE-2026-55400 is an integer underflow in Secure Access servers prior to version 14.57. Attackers with an authenticated session can send specially crafted traffic to a server in a non-default configuration and cause a persistent denial of service.
Weakness: CWE-190
Which versions are affected by CVE-2026-55400?
It affects 1 product.
Products include Absolute Secure Access.
How do I fix CVE-2026-55400?
No fix has been published for CVE-2026-55400 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-55400 being exploited?
There is no known exploitation of CVE-2026-55400 in the wild and no public exploit code.
Other vulnerabilities in Absolute Secure Access
- CVE-2026-55402 Denial of service in 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
Sources
Also known as GHSA-rvwx-fgxf-5vwq.