CVE-2014-4113
HighExploitedPublic exploitwin32k.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 local users to gain privileges via a…
Published Oct 15, 2014 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2014-4113 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Windows 7 (Microsoft), Windows 8 (Microsoft), Windows 8.1 (Microsoft) and 6 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 14, 2014. Public exploit code is available.
- EPSS estimates a 87% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
87%
Higher than 99.7% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2014-4113 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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 local users to gain privileges via a crafted application, as exploited in the wild in October 2014, aka "Win32k.sys Elevation of Privilege Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | May 4, 2022 | May 25, 2022 | Not reported |
| Industry KEV feed | Oct 14, 2014 | May 25, 2022 | Not reported |
| CIRCL KEV | May 4, 2022 | May 25, 2022 | Not reported |
| ENISA EUVD | May 4, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
11 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 7Microsoft | See advisory | n/a |
| Windows 8Microsoft | See advisory | n/a |
| Windows 8.1Microsoft | See advisory | n/a |
| Windows RtMicrosoft | See advisory | n/a |
| Windows Rt 8.1Microsoft | See advisory | n/a |
Timeline
Added to Industry KEV feed
Oct 14, 2014
Publicly disclosed
Oct 15, 2014
Added to CISA KEV
May 4, 2022
Added to CIRCL KEV
May 4, 2022
Added to ENISA EUVD
May 4, 2022
Last updated
Apr 22, 2026
References
- advisoryhttp://blogs.technet.com/b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security-updates.aspx
- advisoryhttps://github.com/sam-b/CVE-2014-4113
- advisory39666
- advisory70364
- patchMS14-058
FAQ
Common Questions.
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 local users to gain privileges via a crafted application, as exploited in the wil…
Affected: Windows 7 (Microsoft); Windows 8 (Microsoft); Windows 8.1 (Microsoft), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 14, 2014.
Yes. It was added on May 4, 2022 with a federal remediation due date of May 25, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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