CVE-2011-1886
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP3 does not properly validate the arguments to functions, which allows local users to read arbitrary data from kernel memory via a crafted application that triggers a NULL pointer…
Does this matter?
Lower severity and a low EPSS score (1.88%). Track it; it rarely justifies an emergency change on its own.
Description
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP3 does not properly validate the arguments to functions, which allows local users to read arbitrary data from kernel memory via a crafted application that triggers a NULL pointer dereference, aka "Win32k Incorrect Parameter Validation Allows Information Disclosure Vulnerability."
- CVSS 2.0
- 2.1 LOWAV:L/AC:L/Au:N/C:P/I:N/A:N
- EPSS
- 1.88% probability · 79th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- microsoft/windows xp
- Source
- secure@microsoft.com
EPSS 1.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://osvdb.org/73791
- http://secunia.com/advisories/45186
- http://support.avaya.com/css/P8/documents/100144947
- http://www.securityfocus.com/bid/48607
- http://www.securitytracker.com/id?1025761
- http://www.us-cert.gov/cas/techalerts/TA11-193A.htmlUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-054
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12778
- http://osvdb.org/73791
- http://secunia.com/advisories/45186
- http://support.avaya.com/css/P8/documents/100144947
- http://www.securityfocus.com/bid/48607
- http://www.securitytracker.com/id?1025761
- http://www.us-cert.gov/cas/techalerts/TA11-193A.htmlUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-054
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12778
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.