Use After Free in Microsoft Windows 10 1507
CVE-2023-21674
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
Vulnerability class: Use-After-Free
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.410 (98.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.418 · newest: 0.410 · change: -0.008
Affected products
- Microsoft Windows 10 1507
- Microsoft Windows 10 1607
- Microsoft Windows 10 1809
- Microsoft Windows 10 20h2
- Microsoft Windows 10 21h2
- Microsoft Windows 10 22h2
- 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
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
- msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674 (vendor-advisory, Patch, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2023-21674?
- CVE-2023-21674 is a high-severity vulnerability in Microsoft Windows 10 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.