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CVE-2026-8670

Insecure session handling on metrics web server

Published: May 22, 2026Updated: May 22, 2026 Sources: CVE List

9.6CVSS

CRITICAL

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.

EPSS Score

0.0%

Top 88.5%

CISA KEV

Not in KEV

Exploits

No Known Exploits

Remediation

No Fix Available

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:CScope

Changed

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

Weaknesses

CWE-613CWE-613 Insufficient session expiration

Affected Products

Avantra

syslink software AG

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques

Defense Evasion

Initial Access

View detailed technique mapping

References

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

support.avantra.com

Timeline

Published

May 22, 2026

Last Updated

May 22, 2026

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