Unauthenticated system interruption via null pointer dereference
Published Jul 11, 2023 · Updated Jan 1, 2025
Denial of service in Microsoft Windows HTTP.sys allows remote attackers to interrupt affected systems via crafted network requests. Microsoft identifies a null pointer dereference in HTTP.sys but has not published the affected request path or malformed input that triggers it. No authentication or user interaction is required; successful exploitation makes the operating system unavailable.
Summary
What happened
Denial of service in Microsoft Windows HTTP.sys allows remote attackers to interrupt affected systems via crafted network requests. Microsoft identifies a null pointer dereference in HTTP.sys but has not published the affected request path or malformed input that triggers it. No authentication or user interaction is required; successful exploitation makes the operating system unavailable.
The record
- CVE
- CVE-2023-32084
- Published
- Jul 11, 2023
- Updated
- Jan 1, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-476, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 11, 2023CVE publishedPublication date reported by the CVE source.
- Jan 1, 2025Record 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=10.0.17763.0 <10.0.17763.4645
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
No public exploit references are available in this record.
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