CVE-2026-8670

CRITICAL EPSS 12.0%

Published May 22, 20261mo ago · Modified Jun 17, 20262w ago

9.6 CVSS 3.1

Critical

Published May 22, 2026 1mo ago

Last Modified Jun 17, 2026 2w ago

Description

Insufficient session expiration vulnerability in syslink software AG Avantra on Linux, Windows allows Reusing Session IDs (aka Session Replay). This issue affects Avantra: before 25.3.1.

CVSS Details

Base Score

9.6

Exploitability

2.8

Impact

6.0

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction Required

Scope Changed

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

12.0% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-613

Affected Products 3

Vendor	Product	Version	Range
avantra	avantra	*	<25.3.1
linux	linux_kernel	*	any
microsoft	windows	*	any

References 1

support.avantra.com https://support.avantra.com/hc/en-us/articles/5533929912351

MitigationVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.