CVE-2026-55400: Vulnerability in Absolute Security Secure Access
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.
AI Analysis
Technical Summary
This vulnerability involves an integer underflow in Secure Access servers before version 14.57. Exploitation requires an authenticated session and a non-default server configuration. The crafted traffic triggers a persistent denial of service condition, impacting server availability. The CVSS 4.0 vector indicates network attack vector, high attack complexity, low privileges required, no user interaction, and high impact on availability.
Potential Impact
Successful exploitation results in a persistent denial of service on the affected Secure Access server, potentially disrupting service availability. No information indicates confidentiality or integrity impacts. The attack requires an authenticated session and a specific non-default configuration, limiting the attack surface.
Mitigation Recommendations
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.
CVE-2026-55400: Vulnerability in Absolute Security Secure Access
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.
CVSS v4.0
Score 6.0medium
Affected software
Absolute Security
Secure Access
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer underflow in Secure Access servers before version 14.57. Exploitation requires an authenticated session and a non-default server configuration. The crafted traffic triggers a persistent denial of service condition, impacting server availability. The CVSS 4.0 vector indicates network attack vector, high attack complexity, low privileges required, no user interaction, and high impact on availability.
Potential Impact
Successful exploitation results in a persistent denial of service on the affected Secure Access server, potentially disrupting service availability. No information indicates confidentiality or integrity impacts. The attack requires an authenticated session and a specific non-default configuration, limiting the attack surface.
Mitigation Recommendations
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.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Absolute
- Date Reserved
- 2026-06-16T21:26:37.698Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7df06abf8831d53973fe29
Added to database: 08/13/2026, 16:27:22 UTC
Last enriched: 09/13/2026, 13:03:43 UTC
Last updated: 09/27/2026, 01:47:43 UTC
Views: 79
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