Is CVE-2014-4148 being actively exploited?

Yes. CVE-2014-4148 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on May 25, 2022.

What is the CVSS score for CVE-2014-4148?

CVE-2014-4148 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2014-4148

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 59.9%EU EUVD: exploited

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."

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-94
EPSS score: 59.9% (99th percentile)
In CISA KEV: Yes, added May 25, 2022
In EU EUVD: Yes (EUVD-2014-4079)
Published: October 15, 2014
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Microsoft Windows Remote Code Execution Vulnerability

Added to the KEV catalog on May 25, 2022; federal remediation due June 15, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-4079 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 22, 2025.

View on the EU Vulnerability Database

Affected products

microsoft / windows 7
microsoft / windows 8
microsoft / windows 8.1
microsoft / windows rt
microsoft / windows rt 8.1
microsoft / windows server 2003
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2012
microsoft / windows server 2012
microsoft / windows vista

Certified products that may be affected

16 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Microsoft Windows 8 and Windows RT - Microsoft Corporation - Common Criteria CCEVS-VR-VID-10620-2015 - archived
Windows 7 BitLocker™ Drive Encryption - Microsoft Corporation - FIPS 140 1332 - historical
Microsoft Windows 7 Kernel Mode Cryptographic Primitives Library (cng.sys) - Microsoft Corporation - FIPS 140 1328 - historical
Microsoft Windows Vista Kernel Mode Security Support Provider Interface (ksecdd.sys) - Microsoft Corporation - FIPS 140 1000 - historical
Microsoft Windows Vista Cryptographic Primitives Library (bcrypt.dll) - Microsoft Corporation - FIPS 140 1001 - historical

See all 16 in the Security Certifications Explorer.

References

http://blogs.technet.com/b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security-updates.aspx(Not Applicable)
http://secunia.com/advisories/60970(Broken Link)
http://www.securityfocus.com/bid/70429(Broken Link, Third Party Advisory, VDB Entry)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-058(Patch, Vendor Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/96995(Third Party Advisory, VDB Entry)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-4148(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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