CVE-2025-62456 — Heap-based Buffer Overflow in Microsoft Windows 11 Version 22h3

CWE-122 — Heap-based Buffer Overflow8 documents7 sources
Severity
8.8HIGHNVD
EPSS
0.2%
top 62.25%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
Microsoft Windows 11 Version 22h3Microsoft Windows 11 Version 23h2Microsoft Windows 11 Version 24h2+7 more
Timeline
PublishedDec 9

Description

Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages10 packages

▶NVDmicrosoft/windows< 10.0.20348.4467+2
▶NVDmicrosoft/windows_11_23h2< 10.0.22631.6345
▶NVDmicrosoft/windows_11_24h2< 10.0.26100.7392
▶NVDmicrosoft/windows_11_25h2< 10.0.26200.7392
▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.4529

🔴Vulnerability Details

2
CVEList
Windows Resilient File System (ReFS) Remote Code Execution Vulnerability↗2025-12-09
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GHSA
GHSA-qrrp-v5pw-7w99: Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network↗2025-12-09
▶

📋Vendor Advisories

1
Microsoft
Windows Resilient File System (ReFS) Remote Code Execution Vulnerability↗2025-12-09
▶

🕵️Threat Intelligence

4
Talos
Microsoft Patch Tuesday for December 2025 — Snort rules and prominent vulnerabilities↗2025-12-09
▶
Talos
Microsoft Patch Tuesday for December 2025 — Snort rules and prominent vulnerabilities↗2025-12-09
▶
Bleepingcomputer
Microsoft December 2025 Patch Tuesday fixes 3 zero-days, 57 flaws↗2025-12-09
▶
Wiz
CVE-2025-62456 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2025-62456 — Heap-based Buffer Overflow | cvebase