CVE-2026-8670

critical · 9.6

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.

9.6

CVSS

0.2%

EPSS (exploit prob.)

12th

EPSS percentile

2026-05-22

Published

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

Weaknesses

CWE-613

Affected products

Vendor	Product	Affected versions
avantra	avantra	< 25.3.1
linux	linux_kernel	all versions
microsoft	windows	all versions

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-8670