CVE-2026-8670
Insecure session handling on metrics web server
Description
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.
INFO
Published Date :
May 22, 2026, 1:12 p.m.
Last Modified :
May 22, 2026, 1:12 p.m.
Remotely Exploit :
Yes !
Source :
NCSC.ch
Affected Products
The following products are affected by CVE-2026-8670
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 455daabc-a392-441d-aa46-37d35189897c | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE |
Solution
- Update Avantra to version 25.3.1 or later.
- Implement stronger session management controls.
- Invalidate sessions upon logout.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8670 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8670 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
May. 22, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Added CWE CWE-613 Added Reference https://support.avantra.com/hc/en-us/articles/5533929912351