Security readout for executives and security teams
CVE-2011-1231 is a Windows kernel privilege-escalation flaw in win32k.sys. An attacker who can run a specially crafted application locally could gain elevated privileges on affected legacy Windows systems. It is serious for any remaining Windows XP, Server 2003, Vista, Server 2008, or Windows 7 Gold/SP1 deployments that lack MS11-034 updates. Exposure is most likely in unmanaged or legacy Microsoft Windows fleets matching the versions named in the CVE description, especially systems missing MS11-034. The source bundle does not provide CPEs or a complete product table. Treat this as high priority for any remaining affected legacy Windows systems. It is not a remote-entry bug, but it can turn local code execution into full compromise, which materially increases ransomware and malware impact. Mitigation focus: Apply the Microsoft MS11-034 security update for affected supported systems.; Use Microsoft guidance to identify the correct update package per Windows version.; Retire or isolate affected legacy systems that cannot be patched..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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Open ATT&CK lookupCVE-2011-1231 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.55.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- mswin-win32k-var19-priv-escalation(66413)CVE reference · vdb-entry, x_refsource_XF
- oval:org.mitre.oval:def:12036CVE reference · vdb-entry, signature
- MS11-034CVE reference · vendor-advisory, x_refsource_MS
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.