Azure
CVE-2026-21224
HIGH
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
Stack-based buffer overflow in Azure Connected Machine Agent allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Azure Connected Machine Agent exploits a stack-based buffer overflow, enabling authenticated users to gain elevated system privileges. The vulnerability affects Azure and Stack Overflow deployments and requires local access with valid credentials to exploit. No patch is currently available for this high-severity issue.
Technical ContextAI
Classified as CWE-121 (Stack-based Buffer Overflow). Affects Azure Connected Machine Agent. Stack-based buffer overflow in Azure Connected Machine Agent allows an authorized attacker to elevate privileges locally.
RemediationAI
Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible.
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today