Public proof of conceptFix available

CVE-2025-59254

Q: Is CVE-2025-59254 actively exploited?

Active exploitation of CVE-2025-59254 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2025-59254?

CVE-2025-59254 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2025-10-14
Fixed in10.0.10240.21161
WeaknessCWE-122

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

Timeline

dates in UTC

2025-10-1417:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-59254?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-59254?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Microsoft windows 10 1507

Branch	Affected	Fixed in	Source
10.0	< 10.0.10240.21161	10.0.10240.21161	NVD

Microsoft windows 10 1607

Branch	Affected	Fixed in	Source
10.0	< 10.0.14393.8519	10.0.14393.8519	NVD

Microsoft windows 10 1809

Branch	Affected	Fixed in	Source
10.0	< 10.0.17763.7919	10.0.17763.7919	NVD

11 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Microsoft windows 10 1507 to 10.0.10240.21161

Advisories and patches

msrc.microsoft.comVendor Advisory

Detection

read 2026-10-23 19:24 UTC

Nuclei template: none so far
Exploit-DB: EDB-52493
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2025-10-14
OpenCVESSVC decisionnone—
CNACVSS 3.17.8read 2026-10-23
CNAweakness (CWE)CWE-122read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-23
Exploit-DBdetectionread 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2025-10-14
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2025-59254?

Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

Is CVE-2025-59254 actively exploited?

Active exploitation of CVE-2025-59254 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-59254?

CVE-2025-59254 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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