Local privilege escalation via heap-based buffer overflow
Published Mar 10, 2026 · Updated Mar 10, 2026
Heap-based buffer overflow in Microsoft Azure Diagnostics extension for Linux before 2.1.24 allows local users to elevate privileges. Microsoft has not published the affected function or the operation that writes beyond the heap allocation. Exploitation requires existing low-privileged local access to an affected Azure Linux VM; successful exploitation grants higher privileges in the VM.
Summary
What happened
Heap-based buffer overflow in Microsoft Azure Diagnostics extension for Linux before 2.1.24 allows local users to elevate privileges. Microsoft has not published the affected function or the operation that writes beyond the heap allocation. Exploitation requires existing low-privileged local access to an affected Azure Linux VM; successful exploitation grants higher privileges in the VM.
The record
- CVE
- CVE-2026-23665
- Published
- Mar 10, 2026
- Updated
- Mar 10, 2026
- Vendor
- Microsoft
- Product
- Azure Diagnostics extension for Linux
- Classifications
- CWE-787, CWE-122, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 10, 2026CVE publishedPublication date reported by the CVE source.
- Mar 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=1.0.0 <2.1.24
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
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Your stack
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