CVE-2026-55400: Absolute Security Secure Access · Integer Overflow
Affects Absolute Security Secure AccessSource CVE Database V5
Not known to be exploited · CVSS 6.0 Medium : upgrade to 14.57 when convenient.
Data as of 9 Nov 2026, 23:24 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 14.57
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 13 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Upgrade Absolute Security Secure Access to 14.57.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Absolute SecuritySecure Access | Affected
| Fixed in
|
AI-suggested
Upgrade Secure Access servers to version 14.57 or later where this vulnerability is fixed. Since the vendor advisory does not provide a patch link but specifies the fixed version, applying this official fix is the recommended remediation. No alternative mitigations or workarounds are provided.
Description
CVE-2026-55400 is an integer underflow vulnerability in Absolute Security Secure Access servers prior to version 14.57. An attacker with an authenticated session can send specially crafted traffic to a server configured in a non-default way, causing a persistent denial of service. The vulnerability has a medium severity rating with a CVSS 4.0 base score of 6. No known exploits are reported in the wild. The issue affects versions from initial releases up to but not including 14.57.