CVE-2026-8670criticalCWE-613

CVE-2026-8670: critical vulnerability in syslink software AG Avantra

Insecure session handling on metrics web server

Published

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.6epss 0.4%
exploitation probability
0.4%top 68% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Affected products
syslink software AG · Avantra
Related CVEs — syslink software AG Avantra

In the same product, most dangerous first.

CVE-2026-8671HIGHLog Files contain encrypted secretsEPSS 0.4%CVE-2026-8673MEDIUMPassword re-initialization mechanism sends passwords in plain textEPSS 0.3%CVE-2026-3873HIGHLegacy built-in user accountEPSS 0.3%CVE-2026-8672MEDIUMDefault credentials for internal DBEPSS 0.1%
References
https://support.avantra.com/hc/en-us/articles/5533929912351