CVE-2023-38170

highpriority · track · 0EPSS 0.007 · 53 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.69% (53rd) EPSS

CVSS 7.8 · high

Is it mine?

22 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · msrc_csaf

EPSS · scored 2026-10-27

HEVC Video Extensions Remote Code Execution Vulnerability

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedHEVC Video Extensionmsrc_csaf
2.0.61931.0:Security Update:https://www.microsoft.com/Licensing/servicecenter/
https://www.microsoft.com/Licensing/servicecenter/
FixedHEVC Video Extensionsmsrc_csaf
2.0.61933.0:Security Update:https://www.microsoft.com/en-US/p/hevc-video-extensions/9nmzlz57r3t7?activetab=pivot:overviewtab
https://www.microsoft.com/en-US/p/hevc-video-extensions/9nmzlz57r3t7?activetab=pivot:overviewtab

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-122USCWE-122US

affected products (22)

Products and version ranges known to be affected.

Hitachi Storage Virtual Storage Platformall versionscert_bundDEcpe:/h:hitachi:storage:virtual_storage_platform
Microsoft Windows 10 Version 1607all versionscert_bundDEcpe:/o:microsoft:windows_10:version_1607
Microsoft Windows 10 Version 1809all versionscert_bundDEcpe:/o:microsoft:windows_10:version_1809
Microsoft Windows 10 Version 21H2all versionscert_bundDEcpe:/o:microsoft:windows_10:version_21h2
Microsoft Windows 10 Version 22H2all versionscert_bundDEcpe:/o:microsoft:windows_10:version_22h2
Microsoft Windows 10 Windows Terminalall versionscert_bundDEcpe:/o:microsoft:windows_10:windows_terminal
Microsoft Windows 11 Version 22H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_22h2
Microsoft Windows 11 version 21H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_21h2
Microsoft Windows Server 2008 R2 SP1all versionscert_bundDEcpe:/o:microsoft:windows_server:2008_r2_sp1
Microsoft Windows Server 2008 SP2all versionscert_bundDEcpe:/o:microsoft:windows_server:2008_sp2
Microsoft Windows Server 2012all versionscert_bundDEcpe:/o:microsoft:windows_server_2012:::server_core_installation
Microsoft Windows Server 2012 R2all versionscert_bundDEcpe:/o:microsoft:windows_server_2012_r2:-
Microsoft Windows Server 2016all versionscert_bundDEcpe:/o:microsoft:windows_server_2016:server_2016::server_core_installation
Microsoft Windows Server 2019all versionscert_bundDEcpe:/o:microsoft:windows_server_2019:server_core_installation
Microsoft Windows Server 2022 Datacenter: Azure Editionall versionscert_bundDEcpe:/o:microsoft:windows_server_2022:datacenter_azure_edition
Microsoft HEVC Video Extension1.0.0.0 → 2.0.61931.0enisa_euvdEU
Microsoft HEVC Video Extensions1.0.0 → 2.0.61933.0enisa_euvdEU
HEVC Video Extensionall versionsfixedmsrc_csafUS
HEVC Video Extension< 2.0.61931.0msrc_csafUS
HEVC Video Extensionsall versionsfixedmsrc_csafUS

showing 20 of 22

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2011Microsoft Windows: Mehrere SchwachstellenDeutsch2023-08-08csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in verschiedenen Versionen von Microsoft Windows und Microsoft Windows Server ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, seine Privilegien zu erweitern, Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen oder Sicherheitsvorkehrungen zu umgehen.
msrc_CVE-2023-38170HEVC Video Extensions Remote Code Execution Vulnerability2023-08-08csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund msrc_csaf NVD CVE.org MITRE

published 2023-08-08modified 2026-08-10

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan