CVE-2022-21844

mediumpriority · track · 28EPSS 0.023 · 83 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.26% (83rd) EPSS

CVSS 6.8 · medium

Is it mine?

10 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · 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
1.0.43421.0:Security Update:https://www.microsoft.com/Licensing/servicecenter/
https://www.microsoft.com/Licensing/servicecenter/
FixedHEVC Video Extensionsmsrc_csaf
1.0.43422.0: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⚠ sources disagree · medium–high · 5.8–7.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:P/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

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

v3.17.8highCVSS: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

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 · NVD / NIST USexploitability 1.8 · impact 5.9

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94US

affected products (10)

Products and version ranges known to be affected.

Microsoft HEVC Video Extension1.0.0.0 → 1.0.43421.0enisa_euvdEU
Microsoft HEVC Video Extensions1.0.0 → 1.0.43422.0enisa_euvdEU
Microsoft Corp HEVC Video Extensions≤ 1.0.43421.0fstec_bduRU
Microsoft Corp HEVC Video Extensions≤ 1.0.41532.0fstec_bduRU
HEVC Video Extensionall versionsfixedmsrc_csafUS
HEVC Video Extension< 1.0.43421.0msrc_csafUS
HEVC Video Extensionsall versionsfixedmsrc_csafUS
HEVC Video Extensions< 1.0.43422.0msrc_csafUS
microsoft hevc video extensions< 1.0.41532.0nvdUScpe:2.3:a:microsoft:hevc_video_extensions:*:*:*:*:*:*:*:*
microsoft hevc video extensions< 1.0.43421.0nvdUScpe:2.3:a:microsoft:hevc_video_extensions:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

msrc_CVE-2022-21844HEVC Video Extensions Remote Code Execution Vulnerability2022-02-08csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu msrc_csaf nvd NVD CVE.org MITRE

published 2022-02-09modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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