SYSTEM privilege escalation via Kernel Streaming double-fetch
Published Jun 11, 2024 · Updated Aug 10, 2026
Memory corruption in Microsoft Windows Kernel Streaming allows local users to gain SYSTEM privileges by racing a crafted event request. The ksthunk CKSAutomationThunk::ThunkEnableEventIrp path checks a user-controlled event flag, then refetches it while proxying IOCTL_KS_ENABLE_EVENT as KernelMode, allowing the flag and kernel-object pointer to change between uses. A low-privileged WoW64 process must win the race; successful exploitation increments chosen kernel memory and enables access to a privileged process.
Summary
What happened
Memory corruption in Microsoft Windows Kernel Streaming allows local users to gain SYSTEM privileges by racing a crafted event request. The ksthunk CKSAutomationThunk::ThunkEnableEventIrp path checks a user-controlled event flag, then refetches it while proxying IOCTL_KS_ENABLE_EVENT as KernelMode, allowing the flag and kernel-object pointer to change between uses. A low-privileged WoW64 process must win the race; successful exploitation increments chosen kernel memory and enables access to a privileged process.
The record
- CVE
- CVE-2024-30090
- Published
- Jun 11, 2024
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-119, CWE-822, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 11, 2024CVE publishedPublication date reported by the CVE source.
- Aug 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.10240.0 <10.0.10240.20680
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- CVE-2024-30090 LPE PoCproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo