by Kastro
Paper/Archive/CVE-2026-8670

CVE-2026-8670

syslink software AG Avantra — Insecure session handling on metrics web server

EPSS 0.2%CVSS 9.6
critical.is priorityof 100
31
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 12.1.121 × 202.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Avantra< 25.3.125.3.1CNA

Scores by source

NCSC.ch (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorysupport.avantra.com/hc/en-us/articles/5533929912351