CVE-2026-8670 | BDVDB-2026-334491 Detail

syslink softwareAvantra

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.

Impact#

CAPEC-60 Reusing Session IDs (aka Session Replay)

Weaknesses#

CWE-613 Insufficient session expiration

References#

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

Exploit#

No public exploit known

History#

Version 12026-05-22Record published in the CVE List.

Published

Published: 2026-05-22
Last modified: 2026-05-22

Vendor information

Vendor: syslink software
Product: Avantra

All syslink software vulnerabilities

Score

9.6 Critical

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 12.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 25.3.1
Fixed
25.3.1

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.6 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Changed
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).