Microsoft Windows Codecs Library RCE (September 2021)

high Nessus Plugin ID 153376
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The Windows app installed on the remote host is affected by a remote code execution vulnerability.


The Windows 'HEVC Video Extensions' or 'HEVC from Device Manufacturer' app installed on the remote host is affected by a remote code execution vulnerability. An attacker who successfully exploited the vulnerability could execute arbitrary code. Exploitation of the vulnerability requires that a program process a specially crafted file.


Upgrade to app version 1.0.42091.0, 1.0.42094.0, or later via the Microsoft Store.

See Also

Plugin Details

Severity: High

ID: 153376

File Name: smb_nt_ms21_sep_hevc.nasl

Version: 1.2

Type: local

Agent: windows

Published: 9/14/2021

Updated: 9/20/2021

Dependencies: smb_hotfixes.nasl, wmi_enum_windows_app_store.nbin

Risk Information

CVSS Score Source: CVE-2021-38661


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/Registry/Enumerated, WMI/Windows App Store/Enumerated

Exploit Ease: No known exploits are available

Patch Publication Date: 9/14/2021

Vulnerability Publication Date: 9/14/2021

Reference Information

CVE: CVE-2021-38661