What is the CVSS score of CVE-2021-27049?

CVE-2021-27049 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.3%.

Is there a patch available for CVE-2021-27049?

Yes, a patch is available for CVE-2021-27049. Update the affected software to the latest version immediately.

High Efficiency Video Coding CVE-2021-27049

HIGH

2021-03-11 secure@microsoft.com

RCE High Efficiency Video Coding

7.8

CVSS 3.1 · Vendor: microsoft

Severity by source

Vendor (microsoft) PRIMARY

7.8 HIGH

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

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Mar 11, 2021 - 16:15 cve.org

HIGH 7.8

DescriptionCVE.org

HEVC Video Extensions Remote Code Execution Vulnerability

AnalysisAI

HEVC Video Extensions Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity.

Technical ContextAI

Affected products include: Microsoft High Efficiency Video Coding.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.