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CVE-2011-1881

26
FAUCET Score

CVE-2011-1881 is a local privilege escalation vulnerability affecting multiple versions of Microsoft Windows, including XP, Vista, Windows 7, and Windows Server 2003/2008. It stems from a NULL pointer dereference in the win32k.sys kernel-mode driver, triggered by a crafted application. This vulnerability carries a high CVSS score of 8.4, indicating a significant risk. An attacker with local access can achieve full compromise of confidentiality, integrity, and availability of the affected system with low attack complexity. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in common frameworks like Metasploit or Nuclei. The vulnerability has received minimal community discussion or media coverage, suggesting it is not widely targeted.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_7:-:sp1:x64:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_7:-:sp1:x86:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

AV:L/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 85th percentile among its peer group of 3,241 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 73787
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-054
secunia.com / advisories/45186
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12851
support.avaya.com / css/P8/documents/100144947
securityfocus.com / bid/48599
securitytracker.com / id
us-cert.gov / cas/techalerts/TA11-193A.html
US Government Resource