In LCOS 10.40 to 10.42.0473-RU3 with SNMPv3 enabled on LANCOM devices, changing the…
Priority MEDIUM 40Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
In LCOS 10.40 to 10.42.0473-RU3 with SNMPv3 enabled on LANCOM devices, changing the password of the root user via the CLI does not change the password of the root user for SNMPv3 access. (However, changing the password of the root user via LANconfig does change the password of the root user for SNMPv3 access.)
Why it matters now
EPSS 0.01101 65th percentileScored 2026-11-07
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 · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:lancom-systems:lcos:*:*:*:*:*:*:*:* | 10.40 to before 10.42.0473 | Vulnerable | Lancom-systems |
| cpe:2.3:o:lancom-systems:lcos:10.42.0473:-:*:*:*:*:*:* | 10.42.0473 | Vulnerable | Lancom-systems |
| cpe:2.3:o:lancom-systems:lcos:10.42.0473:release_update1:*:*:*:*:*:* | 10.42.0473 release_update1 | Vulnerable | Lancom-systems |
| cpe:2.3:o:lancom-systems:lcos:10.42.0473:release_update2:*:*:*:*:*:* | 10.42.0473 release_update2 | Vulnerable | Lancom-systems |
| cpe:2.3:o:lancom-systems:lcos:10.42.0473:release_update3:*:*:*:*:*:* | 10.42.0473 release_update3 | Vulnerable | Lancom-systems |
- cpe:2.3:o:lancom-systems:lcos:*:*:*:*:*:*:*:* Versions 10.40 to before 10.42.0473 Vulnerable ·Lancom-systems
- cpe:2.3:o:lancom-systems:lcos:10.42.0473:-:*:*:*:*:*:* Versions 10.42.0473 Vulnerable ·Lancom-systems
- cpe:2.3:o:lancom-systems:lcos:10.42.0473:release_update1:*:*:*:*:*:* Versions 10.42.0473 release_update1 Vulnerable ·Lancom-systems
- cpe:2.3:o:lancom-systems:lcos:10.42.0473:release_update2:*:*:*:*:*:* Versions 10.42.0473 release_update2 Vulnerable ·Lancom-systems
- cpe:2.3:o:lancom-systems:lcos:10.42.0473:release_update3:*:*:*:*:*:* Versions 10.42.0473 release_update3 Vulnerable ·Lancom-systems
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-33903
- 2026-10-03 Alias added: GHSA-h7w5-g7jm-642w
References
More Lancom-systems Lcos vulnerabilities
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
- TI-2020-14450 ANCOM WLAN Controller (Wireless Series & Hotspot) WLC-1000 & WLC-4006 was discovered to… CVSS 3.1MEDIUM 5.4
Sources
- CVE-2021-33903 · CVE Program
- CVE-2021-33903 · NVD
- FIRST EPSS
- GHSA-h7w5-g7jm-642w · 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