EXPOSURES › CVE-2009-1123
CVE-2009-1123
HIGH ⌖ ON CISA KEV · EXPLOITEDA 2009 Windows kernel privilege escalation flaw was actively exploited in the wild for years before patching.
CVE-2009-1123 allowed local users to escalate privileges via improper kernel object validation, remaining unpatched for over a decade. DIBs must treat long-standing KEV entries as evidence of systemic negligence, not just historical bugs. Immediate action requires verifying patch levels and assuming compromise on any system running unpatched Windows.
Shame score — Microsoft failed to patch a known, actively exploited kernel vulnerability for over a decade, demonstrating severe negligence and enabling widespread compromise.
▸ RECOMMENDED ACTION Actively exploited (CISA KEV) — remediate now, ahead of your normal patch cycle.
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.
| PRODUCT | STATUS |
|---|---|
| Azure Commercial Cloud Microsoft |
Authorized |
| Azure Government (includes Dynamics 365) Microsoft |
Authorized |
| Microsoft Office 365 GCC High Microsoft |
In Process |
| Office 365 Multi-Tenant & Supporting Services Microsoft |
Authorized |