CVE-2026-55400 - Vulnerability Details - OpenCVE

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

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

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

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		https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-55400
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'}`

MITRE

Status: PUBLISHED

Assigner: Absolute

Published: 2026-08-13T16:05:10.423Z

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

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

Link: CVE-2026-55400

Vulnrichment

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

NVD

Status : Received

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

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

Link: CVE-2026-55400

Redhat

No data.

OpenCVE Enrichment

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

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