Local process-data disclosure via world-readable dumps
Published Aug 12, 2021 · Updated Aug 10, 2026
Information disclosure in Microsoft .NET, PowerShell, and Visual Studio components allows local users to read process dumps on Linux and macOS. The dump collection tool assigns global read permissions instead of restricting each dump to its owner, exposing process memory to other local accounts. Exploitation requires a dump to be created and low-privileged local access; the reported consequence is read-only disclosure.
Summary
What happened
Information disclosure in Microsoft .NET, PowerShell, and Visual Studio components allows local users to read process dumps on Linux and macOS. The dump collection tool assigns global read permissions instead of restricting each dump to its owner, exposing process memory to other local accounts. Exploitation requires a dump to be created and low-privileged local access; the reported consequence is read-only disclosure.
The record
- CVE
- CVE-2021-34485
- Published
- Aug 12, 2021
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- .NET Core 2.1
- Classifications
- T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 12, 2021CVE 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
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.1 <2.1.30
What conditions does exploitation require?
What is affected?
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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