How severe is CVE-2014-4148?

CVE-2014-4148 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2014-4148 being actively exploited?

Yes. CVE-2014-4148 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-05-25, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2014-4148?

CVE-2014-4148 primarily affects Microsoft Windows 7. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-4148?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2014-4148 have an EU (EUVD) identifier?

Yes. CVE-2014-4148 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2014-4079. It is also flagged as exploited in the EUVD (since 2022-05-25).

When was CVE-2014-4148 published?

CVE-2014-4148 was published on 2014-10-15 and last updated on 2026-06-17.

CVE-2014-4148

CVE-2014-4148 is a high-severity vulnerability in Microsoft Windows 7 with a CVSS 3.x base score of 8.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-05-25). The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.3
EPSS exploit prediction: 51% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-05-25)
EU (EUVD) id: EUVD-2014-4079
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-05-25)
Weakness: CWE-94
Affected product: Microsoft Windows 7
Published: 2014-10-15
Last modified: 2026-06-17

Description

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."

Frequently asked questions

What is CVE-2014-4148?: 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."
How severe is CVE-2014-4148?: CVE-2014-4148 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2014-4148 being actively exploited?: Yes. CVE-2014-4148 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-05-25, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2014-4148?: CVE-2014-4148 primarily affects Microsoft Windows 7. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-4148?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2014-4148 have an EU (EUVD) identifier?: Yes. CVE-2014-4148 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2014-4079. It is also flagged as exploited in the EUVD (since 2022-05-25).
When was CVE-2014-4148 published?: CVE-2014-4148 was published on 2014-10-15 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*

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