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.

Attack Vector Network

Attack Complexity High

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Absolute Security Secure Access unaffected
Version Status Constraints
0 affected < 14.57

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-55400 cve-icon cve-icon
History

Thu, 13 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 13 Aug 2026 18:15:00 +0000

Type Values Removed Values Added
Title Underflow‑Based Persistent Denial of Service in Absolute Secure Access
Weaknesses CWE-190

Thu, 13 Aug 2026 16:15:00 +0000

Type Values Removed Values Added
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.
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Absolute

Published:

Updated: 2026-08-13T18:50:28.496Z

Reserved: 2026-06-16T21:26:37.698Z

Link: CVE-2026-55400

cve-icon Vulnrichment

Updated: 2026-08-13T18:50:11.252Z

cve-icon NVD

Status : Received

Published: 2026-08-13T16:18:07.720

Modified: 2026-08-13T19:17:23.603

Link: CVE-2026-55400

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T18:00:04Z

Weaknesses