CVE-2026-8670

9.6 criticalEPSS 0.2%

Critical (9.6) in avantra avantra. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.6 critical

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
CWE: CWE-613
Published: 2026-05-22
Modified: 2026-07-23
Record from: the NVD, synced 2026-10-19

Affected

avantra:avantra

References

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

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