Windows BrokerInfrastructure Service Elevation of Privilege Vulnerability

published 2023-03-14 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-27493

cvss: 7.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

Patch / fix

fixed in 9 links 1

Microsoft Windows 10 Version 1809 10.0.17763.4131
Microsoft Windows Server 2019 10.0.17763.4131
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.4131
Microsoft Windows Server 2022 10.0.20348.1607
Microsoft Windows 10 Version 20H2 10.0.19042.2728
Microsoft Windows 11 version 21H2 10.0.22000.1696
Microsoft Windows 10 Version 21H2 10.0.19044.2728
Microsoft Windows 11 version 22H2 10.0.22621.1413
Microsoft Windows 10 Version 22H2 10.0.19045.2728

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23393 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-05-30)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.0	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA	3.1	7.0	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Windows 10 Version 1809
Microsoft Windows Server 2019
Microsoft Windows Server 2019 (Server Core installation)
Microsoft Windows Server 2022
Microsoft Windows 10 Version 20H2
Microsoft Windows 11 version 21H2
Microsoft Windows 10 Version 21H2
Microsoft Windows 11 version 22H2
Microsoft Windows 10 Version 22H2

Classification

Weakness

CWE-591 Sensitive Data Storage in Improperly Locked Memory
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2023-23393
vendor-advisory, patch

Sources

CVE List CVE-2023-23393
NVD CVE-2023-23393

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary