CVE-2014-4148

win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2,...

8.8 HighIn KEV

win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code via a crafted TrueType font, as exploited in the wild in October 2014, aka "TrueType Font Parsing Remote Code Execution Vulnerability."

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

59.9%Up 2.9 points since Feb 4, 2022

What each source reports

NVD Score used 8.8

Record: CVE-2014-4148
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness: CWE-94
Updated: 2026-11-02

CVE List 8.8

Record: CVE-2014-4148
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

EUVDEUVD-2014-4079 8.8

Record: EUVD-2014-4079
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-4wxx-xmrx-3xq9 8.8

win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2,...

Record: GHSA-4wxx-xmrx-3xq9
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

CISA KEV No score

Microsoft Windows Remote Code Execution Vulnerability

A remote code execution vulnerability exists when the Windows kernel-mode driver improperly handles TrueType fonts.

Record: CVE-2014-4148
Weakness: CWE-94
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2014-4148 is a high vulnerability (CVSS 8.8) in Microsoft Windows, published October 15, 2014. CISA lists it as known to be exploited, since May 25, 2022. EUVD reports exploitation since May 25, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 59.9%, the 99th percentile. No source names a fixed version.