CVE-2026-8670 CRITICAL

CVE-2026-8670: Insecure session handling on metrics web server

Vendor Syslink Software Ag
Product Avantra
Weakness CWE-613 · Insufficient session expiration
Published May 22, 2026
Last update May 22, 2026
View on NVD All CVEs

CVSS base score

9.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 22, 2026 CVE published
May 22, 2026 Record updated