Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring.
Priority MEDIUM 64CWE-706Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring.
Why it matters now
EPSS 0.50125 98th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged 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 · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:auerswald:comfortel_3600_ip_firmware:*:*:*:*:*:*:*:* | up to 2.8f | Vulnerable | Auerswald |
| cpe:2.3:h:auerswald:comfortel_3600_ip:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Auerswald |
| cpe:2.3:o:auerswald:comfortel_2600_ip_firmware:*:*:*:*:*:*:*:* | up to 2.8f | Vulnerable | Auerswald |
| cpe:2.3:h:auerswald:comfortel_2600_ip:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Auerswald |
| cpe:2.3:o:auerswald:comfortel_1400_ip_firmware:*:*:*:*:*:*:*:* | up to 2.8f | Vulnerable | Auerswald |
| cpe:2.3:h:auerswald:comfortel_1400_ip:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Auerswald |
- cpe:2.3:o:auerswald:comfortel_3600_ip_firmware:*:*:*:*:*:*:*:* Versions up to 2.8f Vulnerable ·Auerswald
- cpe:2.3:h:auerswald:comfortel_3600_ip:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Auerswald
- cpe:2.3:o:auerswald:comfortel_2600_ip_firmware:*:*:*:*:*:*:*:* Versions up to 2.8f Vulnerable ·Auerswald
- cpe:2.3:h:auerswald:comfortel_2600_ip:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Auerswald
- cpe:2.3:o:auerswald:comfortel_1400_ip_firmware:*:*:*:*:*:*:*:* Versions up to 2.8f Vulnerable ·Auerswald
- cpe:2.3:h:auerswald:comfortel_1400_ip:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Auerswald
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-40856
- 2026-10-03 Alias added: GHSA-j9m7-v9vc-r99f
References
Exploit 3
- https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analyses
- http://packetstormsecurity.com/files/165162/Auerswald-COMfortel-1400-2600-3600-IP-2.8F-Authentication-Bypass.html
- https://www.redteam-pentesting.de/en/advisories/rt-sa-2021-004/-auerswald-comfortel-1400-2600-3600-ip-authentication-bypass
Sources
- CVE-2021-40856 · CVE Program
- CVE-2021-40856 · NVD
- FIRST EPSS
- GHSA-j9m7-v9vc-r99f · 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