What is the CVSS score of CVE-2021-35941?

CVE-2021-35941 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:N/I:N/A:H. EPSS exploitation probability: 12.7%.

Is there a public PoC exploit available for CVE-2021-35941?

Yes, a public proof-of-concept exploit is available for CVE-2021-35941. Prioritise patching immediately. EPSS: 12.7%.

Wd My Book Live Firmware CVE-2021-35941

HIGH

Missing Authentication for Critical Function (CWE-306)

2021-06-29 cve@mitre.org

Authentication Bypass Wd My Book Live Firmware Wd My Book Live Duo 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:N/I:N/A:H

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:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Jun 29, 2021 - 21:15 nvd

HIGH 7.5

DescriptionNVD

AnalysisAI

Western Digital WD My Book Live (2.x and later) and WD My Book Live Duo (all versions) have an administrator API that can perform a system factory restore without authentication, as exploited in the. 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 as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. Western Digital WD My Book Live (2.x and later) and WD My Book Live Duo (all versions) have an administrator API that can perform a system factory restore without authentication, as exploited in the wild in June 2021, a different vulnerability than CVE-2018-18472. Affected products include: Westerndigital Wd My Book Live Firmware, Westerndigital Wd My Book Live Duo Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Require authentication for all sensitive operations, implement defense in depth.