CVE-2021-40856 Auth bypass in n/a
Attackers can bypass authentication on Auerswald IP phones using a path traversal substring, gaining unauthorized access to the device.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40856?
CVE-2021-40856 is a high-severity authentication bypass vulnerability in n/a, published on 13 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring.
Weakness: CWE-706
Which versions are affected by CVE-2021-40856?
It affects 3 products.
Products include Auerswald Comfortel 1400 Ip Firmware, Auerswald Comfortel 2600 Ip Firmware, Auerswald Comfortel 3600 Ip Firmware.
How do I fix CVE-2021-40856?
No fix has been published for CVE-2021-40856 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-40856 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-40856 exists.
Public exploit code: 1 Nuclei template.
Sources
Also known as GHSA-j9m7-v9vc-r99f.