Is CVE-2021-46851 actively exploited?

No active exploitation of CVE-2021-46851 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-46851 be exploited remotely?

Yes. CVE-2021-46851 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-46851?

CVE-2021-46851 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-46851

CRITICAL

CVE-2021-46851

NVD-CWE-noinfoPublished: November 9, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

The DRM module has a vulnerability in verifying the secure memory attributes. Successful exploitation of this vulnerability may cause abnormal video playback.

NVD Source

Risk Analysis

The DRM module in Huawei devices contains a vulnerability related to secure memory attribute verification. This critical flaw could lead to abnormal video playback, and its high CVSS score reflects the potential for significant impact.

There is no known public exploit for this vulnerability, and it is not listed in the CISA KEV catalog.

Recommended Action

Users should apply the latest firmware or security updates provided by Huawei for EMUI and HarmonyOS.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-46851 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.