CVE-2009-1123
Actively exploited. CVE-2009-1123 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
The kernel in Microsoft Windows does not properly validate changes to unspecified kernel objects, which allows local users to gain privileges via a crafted application.
CSIRTS triage
- What
- The kernel in Microsoft Windows does not properly validate changes to unspecified kernel objects, allowing local users to gain privileges.
- Who is affected
- Local users of affected Microsoft Windows versions are at risk.
- Urgency
- Immediate remediation is necessary as the vulnerability is critical and actively exploited.
- Action
- Install the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 91% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2009-1123: Microsoft Windows Improper Input Validation Vulnerabilitycisa-kev · 2022-03-03
External references
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