CVE-2025-62454

HIGH

Windows Cloud Files Mini Filter Driver - Authenticated Heap-based Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-62454. PoCs published by 96613686.

AI-analyzed exploit summary This PoC demonstrates a denial-of-service (DoS) vulnerability in the Windows Cloud Filter driver (cldflt.sys) by triggering a memory access violation via a crafted IOCTL request. The crash occurs in the memcpy function within the driver, leading to a PAGE_FAULT_IN_NONPAGED_AREA (0x50) bugcheck.

Description

Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

Exploits (1)

nomisec WORKING POC
by 96613686 · poc
https://github.com/96613686/CVE-2025-62454

This PoC demonstrates a denial-of-service (DoS) vulnerability in the Windows Cloud Filter driver (cldflt.sys) by triggering a memory access violation via a crafted IOCTL request. The crash occurs in the memcpy function within the driver, leading to a PAGE_FAULT_IN_NONPAGED_AREA (0x50) bugcheck.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows 10 (cldflt.sys driver)
No auth needed
Prerequisites: Windows 10 with Cloud Filter driver enabled · Ability to execute arbitrary code on the target system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0208
EPSS Percentile 79.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-122
Status published
Products (23)
Microsoft/Windows 10 Version 1809 10.0.17763.0 - 10.0.17763.8146
Microsoft/Windows 10 Version 21H2 10.0.19044.0 - 10.0.19044.6691
Microsoft/Windows 10 Version 22H2 10.0.19045.0 - 10.0.19045.6691
Microsoft/Windows 11 version 22H3 10.0.22631.0 - 10.0.22631.6345
Microsoft/Windows 11 Version 23H2 10.0.22631.0 - 10.0.22631.6345
Microsoft/Windows 11 Version 24H2 10.0.26100.0 - 10.0.26100.7462
Microsoft/Windows 11 Version 25H2 10.0.26200.0 - 10.0.26200.7462
Microsoft/Windows Server 2019 10.0.17763.0 - 10.0.17763.8146
Microsoft/Windows Server 2019 (Server Core installation) 10.0.17763.0 - 10.0.17763.8146
Microsoft/Windows Server 2022 10.0.20348.0 - 10.0.20348.4529
... and 13 more
Published Dec 09, 2025
Tracked Since Feb 18, 2026