What is the CVSS score of CVE-2021-40856?

CVE-2021-40856 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 51.1%.

Is there a public PoC exploit available for CVE-2021-40856?

Yes, a public proof-of-concept exploit is available for CVE-2021-40856. Prioritise patching immediately. EPSS: 51.1%.

Comfortel 3600 Ip Firmware CVE-2021-40856

HIGH

Use of Incorrectly-Resolved Name or Reference (CWE-706)

2021-12-13 cve@mitre.org

Authentication Bypass Comfortel 3600 Ip Firmware Comfortel 2600 Ip Firmware Comfortel 1400 Ip Firmware

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Dec 13, 2021 - 04:15 nvd

HIGH 7.5

DescriptionNVD

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

AnalysisAI

Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-706. Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring. Affected products include: Auerswald Comfortel 3600 Ip Firmware, Auerswald Comfortel 2600 Ip Firmware, Auerswald Comfortel 1400 Ip Firmware. Version information: before 2.8.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.