CVE-2023-23389

mediumpriority · track · 0EPSS 0.003 · 17 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.26% (17th) EPSS

CVSS 6.3 · medium

Is it mine?

5 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · msrc_csaf

EPSS · scored 2026-10-27

Microsoft Defender Elevation of Privilege Vulnerability

remediations

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

A vendor fix is available.

FixedMicrosoft Malware Protection Enginemsrc_csaf
1.1.20000.2:Security Update:https://docs.microsoft.com/en-us/microsoft-365/security/defender-endpoint/manage-updates-baselines-microsoft-defender-antivirus?view=o365-worldwide
https://docs.microsoft.com/en-us/microsoft-365/security/defender-endpoint/manage-updates-baselines-microsoft-defender-antivirus?view=o365-worldwide

cvss

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

6.3

010

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

v3.16.3mediumAV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.3mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.16.3mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1 · impact 5.2

v3.15.8mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.16.3mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-362USCWE-367USCWE-367US

affected products (5)

Products and version ranges known to be affected.

Microsoft Microsoft Malware Protection Engine1.1.0.0 → 1.1.20000.2enisa_euvdEU
Microsoft Corp Microsoft Malware Protection Engineall versionsfstec_bduRU
Microsoft Malware Protection Engineall versionsfixedmsrc_csafUS
Microsoft Malware Protection Engine< 1.1.20000.2msrc_csafUS
microsoft malware protection engine= 1.1.20000.2nvdUScpe:2.3:a:microsoft:malware_protection_engine:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0638Microsoft Malware Protection Engine: Schwachstelle ermöglicht PrivilegieneskalationDeutsch2023-03-14csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in der Microsoft Malware Protection Engine ausnutzen, um seine Privilegien zu erhöhen.
msrc_CVE-2023-23389Microsoft Defender Elevation of Privilege Vulnerability2023-03-14csaf · 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 cert_bund NVD CVE.org MITRE

published 2023-03-14modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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