CVE-2025-62550
Published: 09 December 2025
Summary
CVE-2025-62550 is a high-severity Incorrect Calculation of Buffer Size (CWE-131) vulnerability in Microsoft Azure Monitor Agent. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 22.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-16 (Memory Protection) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates the out-of-bounds write vulnerability by requiring timely flaw remediation through patching the Azure Monitor Agent as advised by Microsoft.
Implements memory protection mechanisms such as DEP, ASLR, and stack canaries that prevent exploitation of out-of-bounds writes for remote code execution.
Validates network inputs to the Azure Monitor Agent to prevent malformed data from triggering the out-of-bounds write condition.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Out-of-bounds write in Azure Monitor Agent enables low-privileged remote attackers to achieve RCE with high-impact privileges, directly facilitating T1068 (Exploitation for Privilege Escalation) and T1210 (Exploitation of Remote Services).
NVD Description
Out-of-bounds write in Azure Monitor Agent allows an authorized attacker to execute code over a network.
Deeper analysisAI
CVE-2025-62550 is an out-of-bounds write vulnerability, associated with CWE-131 and CWE-787, affecting the Azure Monitor Agent. Published on 2025-12-09, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to network accessibility, low attack complexity, and significant impacts on confidentiality, integrity, and availability.
An authorized attacker with low privileges (PR:L) can exploit this vulnerability over the network without user interaction. Successful exploitation allows remote code execution, enabling full compromise of the affected system.
The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62550 provides details on patches and mitigation guidance.
Details
- CWE(s)