What is CVE-2021-40856?

CVE-2021-40856 is a high-severity vulnerability in Auerswald Comfortel_1400_ip, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 7.5/10. Published 2021-12-13.

How severe is CVE-2021-40856?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2021-40856 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Auerswald Comfortel_1400_ip

CVE-2021-40856

Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring.

EPSS: 0.511 (98.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

CWE-706 — Use of Incorrectly-Resolved Name or Reference

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-40856?: CVE-2021-40856 is a high-severity vulnerability in Auerswald Comfortel_1400_ip, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 7.5/10. Published 2021-12-13.
How severe is CVE-2021-40856?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-40856 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.