SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2013-3881

win32k.sys in the kernel-mode drivers in Microsoft Windows 7 SP1 and Windows Server 2008 R2 SP1 allows local users to gain privileges via a crafted application, aka "Win32k NULL Page Vulnerability."

EXPLOIT ✓HIGH 7.2EPSS 14.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 14.8%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.

Description

win32k.sys in the kernel-mode drivers in Microsoft Windows 7 SP1 and Windows Server 2008 R2 SP1 allows local users to gain privileges via a crafted application, aka "Win32k NULL Page Vulnerability."

CVSS 2.0
7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS
14.84% probability · 97th percentile
Public exploits
1 in Exploit-DB · verified · first 11 February 2014
CISA KEV
Not listed
Weakness
CWE-399
Affected
microsoft/windows 7
Source
secure@microsoft.com
EPSS trend
0%8%15%4 November 2026: 14.84%4 November 20264 November 2026

EPSS 14.8% since 4 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-31576source ↗Microsoft Windows - TrackPopupMenuEx Win32k NULL Page (MS13-081) (Metasploit)windows · Metasploitlocal11 February 2014yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.