CVE-2014-4115 — fastfat.sys (aka the FASTFAT driver) in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Vista SP2, and Server 2008 SP2 does not properly allocate memory, which allows physically proximate attackers to execute arbitrary code or cause a denial of service (reserved-memory write) by connecting a crafted USB device, aka "Microsoft Windows Disk Partition Driver Elevation of Privilege Vulnerability."

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HIGH

fastfat.sys (aka the FASTFAT driver) in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Vista SP2, and Server 2008 SP2 does not properly allocate memory, which allows physically proximate attackers to execute arbitrary code or cause a denial of service (reserved-memory write) by connecting a crafted USB device, aka "Microsoft Windows Disk Partition Driver Elevation of Privilege Vulnerability."

Published Oct 15, 2014

7.2

HIGH

CVSS 2.0

EPSS 2.88%

Description

fastfat.sys (aka the FASTFAT driver) in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Vista SP2, and Server 2008 SP2 does not properly allocate memory, which allows physically proximate attackers to execute arbitrary code or cause a denial of service (reserved-memory write) by connecting a crafted USB device, aka "Microsoft Windows Disk Partition Driver Elevation of Privilege Vulnerability."

Affected products

Remediation

No remediation recorded yet.

Metrics

2.88% 0.02882

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.02882

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (15 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	2.88% (0.02882)	86.37th	v5 (v2026.06.15)
Jun 15, 2026	2.88% (0.02882)	84.99th	v5 (v2026.06.15)
Mar 17, 2025	0.74% (0.00745)	71.32th	v4 (v2025.03.14)
Dec 12, 2024	1.09% (0.01086)	84.97th	v3 (v2023.03.01)
Jul 11, 2024	0.85% (0.00852)	82.36th	v3 (v2023.03.01)
May 27, 2024	0.61% (0.00611)	78.62th	v3 (v2023.03.01)
Feb 15, 2024	0.43% (0.00431)	73.83th	v3 (v2023.03.01)
Dec 30, 2023	0.43% (0.00431)	71.82th	v3 (v2023.03.01)
Aug 5, 2023	0.40% (0.00399)	70.14th	v3 (v2023.03.01)
May 10, 2023	0.48% (0.00476)	72.12th	v3 (v2023.03.01)
Mar 7, 2023	0.35% (0.00348)	67.24th	v3 (v2023.03.01)
Mar 6, 2023	5.48% (0.05481)	90.00th	v2 (v2022.01.01)
May 16, 2022	5.48% (0.05481)	89.14th	v2 (v2022.01.01)
Apr 1, 2022	5.02% (0.05018)	88.48th	v2 (v2022.01.01)
Feb 4, 2022	5.02% (0.05018)	75.00th	v2 (v2022.01.01)

Weaknesses (1)

CWE-399

References (4)

http://blogs.technet.com/b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security-updates.aspx
x_refsource_CONFIRMVendor Advisory
http://secunia.com/advisories/60975
third-party-advisoryx_refsource_SECUNIA
http://www.securityfocus.com/bid/70343
vdb-entryx_refsource_BID
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-063
vendor-advisoryx_refsource_MS

Link	Providers	Tags
http://blogs.technet.com/b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security-updates.aspx		x_refsource_CONFIRMVendor Advisory
http://secunia.com/advisories/60975		third-party-advisoryx_refsource_SECUNIA
http://www.securityfocus.com/bid/70343		vdb-entryx_refsource_BID
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-063		vendor-advisoryx_refsource_MS

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner microsoft

Published Oct 15, 2014

Updated Aug 6, 2024

Reserved Jun 12, 2014

Link CVE-2014-4115

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2014-4115

Red Hat

Severity n/a

Public date n/a

Links CVE-2014-4115