High severity7.5NVD Advisory· Published Dec 13, 2021· Updated Jun 17, 2026
CVE-2021-40856
CVE-2021-40856
Description
Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5- cpe:2.3:o:auerswald:comfortel_1400_ip_firmware:*:*:*:*:*:*:*:*Range: <=2.8f
- cpe:2.3:o:auerswald:comfortel_2600_ip_firmware:*:*:*:*:*:*:*:*Range: <=2.8f
- cpe:2.3:o:auerswald:comfortel_3600_ip_firmware:*:*:*:*:*:*:*:*Range: <=2.8f
- Auerswald/COMfortel 1400 IP and 2600 IPdescription
- Range: <2.8G
Patches
Vulnerability mechanics
References
3- packetstormsecurity.com/files/165162/Auerswald-COMfortel-1400-2600-3600-IP-2.8F-Authentication-Bypass.htmlnvdExploitThird Party AdvisoryVDB Entry
- www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analysesnvdExploitThird Party Advisory
- www.redteam-pentesting.de/en/advisories/rt-sa-2021-004/-auerswald-comfortel-1400-2600-3600-ip-authentication-bypassnvdExploitThird Party Advisory
News mentions
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