CVE-2025-24985
published 2025-03-11CVE-2025-24985: Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.
PriorityP180high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2025-04-01
Exploited in the wild
EPSS
3.71%
88.5th percentile
Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.
Affected
47 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.20947 | 10.0.10240.20947 |
| microsoft | windows_10_1607 | < 10.0.14393.7876 | 10.0.14393.7876 |
| microsoft | windows_10_1809 | < 10.0.17763.7009 | 10.0.17763.7009 |
| microsoft | windows_10_21h2 | < 10.0.19044.5608 | 10.0.19044.5608 |
| microsoft | windows_10_22h2 | < 10.0.19045.5608 | 10.0.19045.5608 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.20947 | 10.0.10240.20947 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.7876 | 10.0.14393.7876 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7009 | 10.0.17763.7009 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.5608 | 10.0.19044.5608 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.5608 | 10.0.19045.5608 |
| microsoft | windows_11_22h2 | < 10.0.22621.5039 | 10.0.22621.5039 |
| microsoft | windows_11_23h2 | < 10.0.22631.5039 | 10.0.22631.5039 |
| microsoft | windows_11_24h2 | < 10.0.26100.3403 | 10.0.26100.3403 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5039 | 10.0.22621.5039 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5039 | 10.0.22631.5039 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5039 | 10.0.22631.5039 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.3476 | 10.0.26100.3476 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.27618 | 6.1.7601.27618 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.23168 | 6.0.6003.23168 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25368 | 6.2.9200.25368 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22470 | 6.3.9600.22470 |
| microsoft | windows_server_2016 | < 10.0.14393.7876 | 10.0.14393.7876 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.7876 | 10.0.14393.7876 |
Detection & IOCsextracted from sources · hover to see the quote
- →Trigger vector is mounting a specially crafted VHD file — monitor for VHD mount events on Windows systems, especially initiated by non-administrative users ↗
- →The vulnerability is in the Windows Fast FAT File System Driver (fastfat.sys); monitor for anomalous activity or crashes associated with this driver following VHD mount operations ↗
- →CVE-2025-24985 is confirmed actively exploited in the wild — prioritize detection and patching on all affected Windows versions ↗
- →Zscaler Advanced Threat Protection subscription is required to detect exploitation attempts against CVE-2025-24985 ↗
- ·Attack vector is local (AV:L) despite 'Remote Code Execution' in the title — exploitation requires a local user to mount a malicious VHD, not a network-based attack ↗
- ·User interaction is required (UI:R) — the attack depends on tricking a local user into mounting the crafted VHD; purely automated exploitation without user interaction is not possible ↗
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vulncheck7.8HIGH
cisa7.8HIGH
vendor_msrc7.8HIGH
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Microsoft
Windows Fast FAT File System Driver Remote Code Execution Vulnerability
vendor_msrc·2025-03-11·CVSS 7.8
CVE-2025-24985 [HIGH] CWE-190 Windows Fast FAT File System Driver Remote Code Execution Vulnerability
Windows Fast FAT File System Driver Remote Code Execution Vulnerability
Description: Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.
FAQ: According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?
The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.
FAQ: According to the CVSS metric, the attack vector is local (AV:L) while user interaction is required (UI:R). What does that mean for this vulnerability?
A
CISA
Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability
cisa·2025-03-11·CVSS 7.8
CVE-2025-24985 [HIGH] CWE-190 Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability
Vulnerability: Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability
Affected: Microsoft Windows
Microsoft Windows Fast FAT File System Driver contains an integer overflow or wraparound vulnerability that allows an unauthorized attacker to execute code locally.
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes: https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-24985 ; https://nvd.nist.gov/vuln/detail/CVE-2025-24985
Remediation Due Date: 2025-04-01
GHSA
GHSA-vf6f-gpmv-93m4: Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally
ghsa_unreviewed·2025-03-11
CVE-2025-24985 [HIGH] CWE-122 GHSA-vf6f-gpmv-93m4: Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally
Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.
VulnCheck
Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability
vulncheck·2025·CVSS 7.8
CVE-2025-24985 [HIGH] CWE-190 Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability
Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability
Microsoft Windows Fast FAT File System Driver contains an integer overflow or wraparound vulnerability that allows an unauthorized attacker to execute code locally.
Affected: Microsoft Windows
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Exploitation References: https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Mar; https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit; https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-24985; https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json; https://swarm.pt
No detection rules found.
No public exploits indexed.
Bleepingcomputer
Microsoft patches Windows Kernel zero-day exploited since 2023
blogs_bleepingcomputer·2025-03-12·CVSS 7.8
CVE-2025-24983 [HIGH] Microsoft patches Windows Kernel zero-day exploited since 2023
## Microsoft patches Windows Kernel zero-day exploited since 2023
## Sergiu Gatlan
ESET said on Tuesday that a zero-day exploit targeting the CVE-2025-24983 vulnerability was "first seen in the wild" in March 2023 on systems backdoored using PipeMagic malware.
This exploit targets only older Windows versions (Windows Server 2012 R2 and Windows 8.1) that Microsoft no longer supports. However, the vulnerability also affects newer Windows versions, including the still-supported Windows Server 2016 and Windows 10 systems running Windows 10 build 1809 and earlier.
"The Use-After-Free (UAF) vulnerability is related to improper memory usage during software operation. This can lead to software crashes, execution of malicious code (including remotely), privilege escalation, or data corruption,"
Krebs
Microsoft: 6 Zero-Days in March 2025 Patch Tuesday
blogs_krebs·2025-03-12·CVSS 7.0
CVE-2025-24991 [HIGH] Microsoft: 6 Zero-Days in March 2025 Patch Tuesday
Microsoft today issued more than 50 security updates for its various Windows operating systems, including fixes for a whopping six zero-day vulnerabilities that are already seeing active exploitation.
Two of the zero-day flaws include CVE-2025-24991 and CVE-2025-24993, both vulnerabilities in NTFS, the default file system for Windows and Windows Server. Both require the attacker to trick a target into mounting a malicious virtual hard disk. CVE-2025-24993 would lead to the possibility of local code execution, while CVE-2025-24991 could cause NTFS to disclose portions of memory.
Microsoft credits researchers at ESET with reporting the zero-day bug labeled CVE-2025-24983, an elevation of privilege vulnerability in older versions of Windows. ESET said the exploit was deployed via the PipeMa
Qualys
Microsoft and Adobe Patch Tuesday, March 2025 Security Update Review
blogs_qualys·2025-03-11
Microsoft and Adobe Patch Tuesday, March 2025 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for March 2025
Adobe Patches for March 2025
Zero-day Vulnerabilities Patched in March Patch Tuesday Edition
Critical Severity Vulnerabilities Patched in March Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
Rapid Response withPatch Management (PM)
EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
Risk Reduction via TruRisk Eliminate
Qualys Monthly Webinar Series
March 2025 Patch Tuesday is here, and Microsoft has rolled out critical security updates that address multiple vulnerabilities across its product suite. Here’s a quick breakdown of what you need to know.
## Microsoft Patch Tu
Talos
Microsoft Patch Tuesday for March 2025 — Snort rules and prominent vulnerabilities
blogs_talos·2025-03-11·CVSS 7.8
CVE-2025-26633 [HIGH] Microsoft Patch Tuesday for March 2025 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for March 2025 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for March of 2025 which includes 57 vulnerabilities affecting a range of products, including 6 that Microsoft marked as “critical”.
There are six vulnerabilities that Microsoft has observed being exploited in the wild. CVE-2025-26633 is a Remoted Code Execution (RCE) vulnerability in Microsoft’s Management Console. Two information disclosure vulnerabilities, CVE-2025-24984 and CVE-2025-24991 , and one RCE vulnerability, CVE-2025-24993 , in Windows NTFS were observed being exploited in the wild. Microsoft also patched, CVE-2025-24985 , another RCE exploited in the wild in the Windows Fast FAT system driver. An Elevation of Privilege (EOP) vulnerability,
Tenable
Microsoft’s March 2025 Patch Tuesday Addresses 56 CVEs (CVE-2025-26633, CVE-2025-24983, CVE-2025-24993)
blogs_tenable·2025-03-11·CVSS 7.0
[HIGH] Microsoft’s March 2025 Patch Tuesday Addresses 56 CVEs (CVE-2025-26633, CVE-2025-24983, CVE-2025-24993)
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Krebs
Microsoft: 6 Zero-Days in March 2025 Patch Tuesday
blogs_krebs·2025-03-11·CVSS 7.0
CVE-2025-24991 [HIGH] Microsoft: 6 Zero-Days in March 2025 Patch Tuesday
Microsoft today issued more than 50 security updates for its various Windows operating systems, including fixes for a whopping six zero-day vulnerabilities that are already seeing active exploitation.
Two of the zero-day flaws include CVE-2025-24991 and CVE-2025-24993 , both vulnerabilities in NTFS , the default file system for Windows and Windows Server. Both require the attacker to trick a target into mounting a malicious virtual hard disk. CVE-2025-24993 would lead to the possibility of local code execution, while CVE-2025-24991 could cause NTFS to disclose portions of memory.
Microsoft credits researchers at ESET with reporting the zero-day bug labeled CVE-2025-24983 , an elevation of privilege vulnerability in older versions of Windows. ESET said the exploit was deployed via the Pip
Talos
Microsoft Patch Tuesday for March 2025 — Snort rules and prominent vulnerabilities
blogs_talos·2025-03-11·CVSS 7.8
CVE-2025-26633 [HIGH] Microsoft Patch Tuesday for March 2025 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for March of 2025 which includes 57 vulnerabilities affecting a range of products, including 6 that Microsoft marked as “critical”.
There are six vulnerabilities that Microsoft has observed being exploited in the wild. CVE-2025-26633 is a Remoted Code Execution (RCE) vulnerability in Microsoft’s Management Console. Two information disclosure vulnerabilities, CVE-2025-24984 and CVE-2025-24991, and one RCE vulnerability, CVE-2025-24993, in Windows NTFS were observed being exploited in the wild. Microsoft also patched, CVE-2025-24985, another RCE exploited in the wild in the Windows Fast FAT system driver. An Elevation of Privilege (EOP) vulnerability, CVE-2025-24983, was also discovered being exploited in the wild, in Windows’ win32 Kernel
Qualys
Microsoft and Adobe Patch Tuesday, March 2025 Security Update Review | Qualys
blogs_qualys·2025-03-11
Microsoft and Adobe Patch Tuesday, March 2025 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for March 2025
- Adobe Patches for March 2025
- Zero-day Vulnerabilities Patched in March Patch Tuesday Edition
- Critical Severity Vulnerabilities Patched in March Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
- Rapid Response withPatch Management (PM)
- EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
- Risk Reduction via TruRisk Eliminate
- Qualys Monthly Webinar Series
March 2025 Patch Tuesday is here, and Microsoft has rolled out critical security updates that address multiple vulnerabilities across its product suite. Here’s a quick breakdown of what you need to know.
## Micr
Bleepingcomputer
Microsoft March 2025 Patch Tuesday fixes 7 zero-days, 57 flaws
blogs_bleepingcomputer·2025-03-11·CVSS 7.0
[HIGH] Microsoft March 2025 Patch Tuesday fixes 7 zero-days, 57 flaws
## Microsoft March 2025 Patch Tuesday fixes 7 zero-days, 57 flaws
## Lawrence Abrams
23 Elevation of Privilege Vulnerabilities
3 Security Feature Bypass Vulnerabilities
23 Remote Code Execution Vulnerabilities
4 Information Disclosure Vulnerabilities
1 Denial of Service Vulnerabilities
3 Spoofing Vulnerabilities
The above numbers do not include Mariner flaws and 10 Microsoft Edge vulnerabilities fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5053598 & KB5053602 cumulative updates and the Windows 10 KB5053606 update .
## Six actively exploited zero-days
This month's Patch Tuesday fixes six actively exploited zero-days and one that was publicly exposed, for a total of seven zero-days.
Crowdstrike
March 2025 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] March 2025 Patch Tuesday: Updates and Analysis
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Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
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Zscaler
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blogs_zscaler·CVSS 7.8
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https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24985https://www.vicarius.io/vsociety/posts/cve-2025-24985-integer-overflow-vulnerability-in-microsoft-windows-fast-fat-driver-detection-scripthttps://www.vicarius.io/vsociety/posts/cve-2025-24985-integer-overflow-vulnerability-in-microsoft-windows-fast-fat-driver-mitigation-scripthttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24985
2025-03-11
Published
2025-03-11
Added to CISA KEV
Exploited in the wild