Adjacent unauthenticated disclosure through improper input validation
Published Jul 11, 2023 · Updated Jan 1, 2025
Information disclosure in the Windows Layer-2 Bridge Network Driver allows adjacent attackers to read sensitive data via network traffic. Microsoft identifies improper input validation but has not disclosed the exact request field or code path that mishandles untrusted network input. Exploitation requires access to the same restricted network segment, needs no credentials or user action, and affects confidentiality without reported modification or service interruption.
Summary
What happened
Information disclosure in the Windows Layer-2 Bridge Network Driver allows adjacent attackers to read sensitive data via network traffic. Microsoft identifies improper input validation but has not disclosed the exact request field or code path that mishandles untrusted network input. Exploitation requires access to the same restricted network segment, needs no credentials or user action, and affects confidentiality without reported modification or service interruption.
The record
- CVE
- CVE-2023-32037
- Published
- Jul 11, 2023
- Updated
- Jan 1, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-20
- Attack vector
- adjacent
- 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
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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.
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Technologies
Your stack
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Your stack
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