Unauthenticated information disclosure via NFS integer underflow
Published Apr 11, 2023 · Updated Jan 23, 2025
Integer underflow in Microsoft Windows NFS on affected Windows Server builds allows remote attackers to disclose information over the network. Microsoft identifies CWE-191 but has not published the affected function, arithmetic operation, or crafted NFS request that triggers the underflow. Exploitation requires network access to a server with the NFS role enabled; the type and scope of exposed information are undisclosed.
Summary
What happened
Integer underflow in Microsoft Windows NFS on affected Windows Server builds allows remote attackers to disclose information over the network. Microsoft identifies CWE-191 but has not published the affected function, arithmetic operation, or crafted NFS request that triggers the underflow. Exploitation requires network access to a server with the NFS role enabled; the type and scope of exposed information are undisclosed.
The record
- CVE
- CVE-2023-28247
- Published
- Apr 11, 2023
- Updated
- Jan 23, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-191
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 11, 2023CVE publishedPublication date reported by the CVE source.
- Jan 23, 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 <10.0.17763.4252
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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