What is CVE-2025-21298?

CVE-2025-21298 is a critical-severity vulnerability in Microsoft Windows 10 Version 1507, classified under Use After Free. CVSS score: 9.8/10. Published 2025-01-14.

How severe is CVE-2025-21298?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-21298 known to be exploited?

23 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Microsoft Windows 10 Version 1507

CVE-2025-21298

Windows OLE Remote Code Execution Vulnerability

Vulnerability class: Use-After-Free

EPSS: 0.747 (98.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/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 10 Version 1809 — versions 10.0.17763.0
Microsoft Windows 10 Version 21h2 — versions 10.0.19044.0
Microsoft Windows 10 Version 22h2 — versions 10.0.19045.0
Microsoft Windows 11 Version 22h2 — versions 10.0.22621.0
Microsoft Windows 11 Version 22h3 — versions 10.0.22631.0
Microsoft Windows 11 Version 23h2 — versions 10.0.22631.0
Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
Microsoft Windows Server 2008 R2 Service Pack 1 — versions 6.1.7601.0

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

Windows OLE Remote Code Execution Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2025-21298?: CVE-2025-21298 is a critical-severity vulnerability in Microsoft Windows 10 Version 1507, classified under Use After Free. CVSS score: 9.8/10. Published 2025-01-14.
How severe is CVE-2025-21298?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-21298 known to be exploited?: 23 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.