What is CVE-2023-29336?

CVE-2023-29336 is a high-severity vulnerability in Microsoft Windows 10 Version 1507, classified under Use After Free. CVSS score: 7.8/10. Published 2023-05-09.

How severe is CVE-2023-29336?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-29336 known to be exploited?

Yes. CVE-2023-29336 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-05-09), indicating it is being actively exploited. 11 public proof-of-concept repositories are indexed.

Use After Free in Microsoft Windows 10 Version 1507

CVE-2023-29336

Win32k Elevation of Privilege Vulnerability

Vulnerability class: Use-After-Free

EPSS: 0.767 (99.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.

Affected products

Microsoft Windows 10 Version 1507 — versions 10.0.10240.0
Microsoft Windows 10 Version 1607 — versions 10.0.14393.0
Microsoft Windows Server 2008 R2 Service Pack 1 — versions 6.1.7601.0
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core Installation) — versions 6.1.7601.0
Microsoft Windows Server 2008 Service Pack 2 — versions 6.0.6003.0
Microsoft Windows Server 2008 Service Pack 2 — versions 6.0.6003.0
Microsoft Windows Server 2008 Service Pack 2 (Server Core Installation) — versions 6.0.6003.0
Microsoft Windows Server 2012 — versions 6.2.9200.0
Microsoft Windows Server 2012 R2 — versions 6.3.9600.0
Microsoft Windows Server 2012 R2 (Server Core Installation) — versions 6.3.9600.0

Weakness classification (CWE)

CWE-416 — Use After Free

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-05-09. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-05-30.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

Win32k Elevation of Privilege Vulnerability (vendor-advisory)

Frequently asked questions

What is CVE-2023-29336?: CVE-2023-29336 is a high-severity vulnerability in Microsoft Windows 10 Version 1507, classified under Use After Free. CVSS score: 7.8/10. Published 2023-05-09.
How severe is CVE-2023-29336?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-29336 known to be exploited?: Yes. CVE-2023-29336 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-05-09), indicating it is being actively exploited. 11 public proof-of-concept repositories are indexed.