Use After Free in Microsoft Windows 10 Version 1507
CVE-2023-21674
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
Vulnerability class: Use-After-Free
EPSS: 0.170 (95.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/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 10 Version 1809 — versions 10.0.17763.0, 10.0.0
- Microsoft Windows 10 Version 20h2 — versions 10.0.0
- Microsoft Windows 10 Version 21h2 — versions 10.0.19043.0
- Microsoft Windows 10 Version 22h2 — versions 10.0.19045.0
- Microsoft Windows 11 Version 21h2 — versions 10.0.0
- Microsoft Windows 11 Version 22h2 — versions 10.0.22621.0
- Microsoft Windows 8.1 — versions 6.3.0
- Microsoft Windows Server 2012 R2 — versions 6.3.9600.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . 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: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2023-21674?
- CVE-2023-21674 is a high-severity vulnerability in Microsoft Windows 10 Version 1507, classified under Use After Free. CVSS score: 8.8/10. Published 2023-01-10.
- How severe is CVE-2023-21674?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-21674 known to be exploited?
- Yes. CVE-2023-21674 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-01-10), indicating it is being actively exploited. 9 public proof-of-concept repositories are indexed.