Insecure session handling on metrics web server
Priority MEDIUM 42CWE-613Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-613.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00216 12th percentileScored 2026-11-07
Fix Fixed Avantra (syslink software AG): 25.3.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| syslink software AG | Avantra | before 25.3.1 | 25.3.1 | Patch available | CNA |
- Avantra Vendorsyslink software AG Affected before 25.3.1 Fixed in 25.3.1 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:avantra:avantra:*:*:*:*:*:*:*:* | before 25.3.1 | Vulnerable | syslink software AG |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Linux |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:avantra:avantra:*:*:*:*:*:*:*:* Versions before 25.3.1 Vulnerable ·syslink software AG
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
- Fix · CNA Avantra (syslink software AG) Fixed in 25.3.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8670
- 2026-10-03 Alias added: GHSA-rvw7-wx4g-rq78
References
More syslink software AG Avantra vulnerabilities
- TI-2026-07622 Password re-initialization mechanism sends passwords in plain text CVSS 3.1CRITICAL 9.1
- TI-2026-07620 Log Files contain encrypted secrets CVSS 3.1HIGH 7.5
- TI-2026-07621 Default credentials for internal DB CVSS 3.1MEDIUM 5.1
Sources
- CVE-2026-8670 · CVE Program
- CVE-2026-8670 · NVD
- FIRST EPSS
- GHSA-rvw7-wx4g-rq78 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences