LANCOM R&S Unified Firewall (UF) devices running LCOS FX 10.5 allow Relative Path Traversal.
Priority LOW 36CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
LANCOM R&S Unified Firewall (UF) devices running LCOS FX 10.5 allow Relative Path Traversal.
Why it matters now
EPSS 0.01486 74th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:lancom-systems:lcos_fx:10.5:-:*:*:*:*:*:* | 10.5 | Vulnerable | Lancom-systems |
| cpe:2.3:o:lancom-systems:lcos_fx:10.5:ru1:*:*:*:*:*:* | 10.5 ru1 | Vulnerable | Lancom-systems |
| cpe:2.3:o:lancom-systems:lcos_fx:10.5:ru2:*:*:*:*:*:* | 10.5 ru2 | Vulnerable | Lancom-systems |
| cpe:2.3:o:lancom-systems:lcos_fx:10.5:ru3:*:*:*:*:*:* | 10.5 ru3 | Vulnerable | Lancom-systems |
| cpe:2.3:h:lancom-systems:uf-160:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lancom-systems |
| cpe:2.3:h:lancom-systems:uf-260:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lancom-systems |
| cpe:2.3:h:lancom-systems:uf-500:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lancom-systems |
| cpe:2.3:h:lancom-systems:uf-60:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lancom-systems |
| cpe:2.3:h:lancom-systems:uf-910:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lancom-systems |
- cpe:2.3:o:lancom-systems:lcos_fx:10.5:-:*:*:*:*:*:* Versions 10.5 Vulnerable ·Lancom-systems
- cpe:2.3:o:lancom-systems:lcos_fx:10.5:ru1:*:*:*:*:*:* Versions 10.5 ru1 Vulnerable ·Lancom-systems
- cpe:2.3:o:lancom-systems:lcos_fx:10.5:ru2:*:*:*:*:*:* Versions 10.5 ru2 Vulnerable ·Lancom-systems
- cpe:2.3:o:lancom-systems:lcos_fx:10.5:ru3:*:*:*:*:*:* Versions 10.5 ru3 Vulnerable ·Lancom-systems
- cpe:2.3:h:lancom-systems:uf-160:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lancom-systems
- cpe:2.3:h:lancom-systems:uf-260:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lancom-systems
- cpe:2.3:h:lancom-systems:uf-500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lancom-systems
- cpe:2.3:h:lancom-systems:uf-60:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lancom-systems
- cpe:2.3:h:lancom-systems:uf-910:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lancom-systems
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-31538
- 2026-10-03 Alias added: GHSA-r6mr-fq3c-f6ff
References
More Lancom-systems Lcos Fx vulnerabilities
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
Sources
- CVE-2021-31538 · CVE Program
- CVE-2021-31538 · NVD
- FIRST EPSS
- GHSA-r6mr-fq3c-f6ff · 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