CVE-2023-38146

highpriority · track · 23EPSS 0.374 · 99 %ileexploit · weaponizedDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

5 exploits · weaponized

Likely / severe?

37.4% (99th) EPSS

CVSS 8.8 · high

Is it mine?

29 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Windows Themes Remote Code Execution Vulnerability

remediations

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

A vendor fix is available.

FixedWindows 11 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.22621.2283:Security Update:https://support.microsoft.com/help/5030219
https://support.microsoft.com/help/5030219
FixedWindows 11 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.22621.2283:Security Update:https://support.microsoft.com/help/5030219
https://support.microsoft.com/help/5030219
FixedWindows 11 version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.22000.2416:Security Update:https://support.microsoft.com/help/5030217
https://support.microsoft.com/help/5030217
FixedWindows 11 version 21H2 for x64-based Systemsmsrc_csaf
10.0.22000.2416:Security Update:https://support.microsoft.com/help/5030217
https://support.microsoft.com/help/5030217

cvss

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

8.8

010

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

v3.18.8highAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.18.8highCVSS:3.1/AV:N/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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-367USCWE-367US

exploits (5)

Public proof-of-concept and weaponised exploit code.

exploit/windows/fileformat/theme_dll_hijack_cve_2023_38146Themebleed- Windows 11 Themes Arbitrary Code Execution CVE-2023-38146weaponized · metasploit
CH0ico/CVE-2023-38146-PocBetter POCPoC · poc_in_github
Durge5/ThemeBleedPyA proof of concept using python for the CVE-2023-38146 "ThemeBleed"PoC · poc_in_github
Jnnshschl/CVE-2023-38146PoC for the ThemeBleed Windows 11 CVE-2023-38146 written in python using impacket. https://jnns.de/posts/cve-2023-38146-poc/PoC · poc_in_github
exploits-forsale/themebleedProof-of-Concept for CVE-2023-38146 ("ThemeBleed")PoC · poc_in_github

affected products (29)

Products and version ranges known to be affected.

Hitachi Storageall versionscert_bundDEcpe:/h:hitachi:storage:-
Microsoft Windows 10all versionscert_bundDEcpe:/o:microsoft:windows_10:-
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 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:-
Microsoft Windows Server 2012 R2all versionscert_bundDEcpe:/o:microsoft:windows_server_2012_r2:-
Microsoft Windows Server 2016all versionscert_bundDEcpe:/o:microsoft:windows_server_2016:-
Microsoft Windows Server 2019all versionscert_bundDEcpe:/o:microsoft:windows_server_2019:-
Microsoft Windows Server 2022all versionscert_bundDEcpe:/o:microsoft:windows_server_2022:-
Microsoft Windows 11 version 21H210.0.0 → 10.0.22000.2416enisa_euvdEU
Microsoft Windows 11 version 22H210.0.22621.0 → 10.0.22621.2283enisa_euvdEU
Microsoft Corp Windows 11 21H2all versionsfstec_bduRU
Microsoft Corp Windows 11 22H2all versionsfstec_bduRU
Windows 11 Version 22H2 for ARM64-based Systemsall versionsfixedmsrc_csafUS

showing 20 of 29

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2328Microsoft Windows und Microsoft Windows Server: Mehrere SchwachstellenDeutsch2023-09-12csaf · cert_bundDE
Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in Microsoft Windows und Microsoft Windows Server ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand herbeizuführen und seine Rechte zu erweitern.
msrc_CVE-2023-38146Windows Themes Remote Code Execution Vulnerability2023-09-12csaf · 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 cert_bund msrc_csaf NVD CVE.org MITRE

published 2023-09-12modified 2026-07-13

references (8)

External citations — patches, advisories, analysis.

scry

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