CVE-2026-109457: Azure CLI Remote Code Execution Vulnerability
CVE-2026-109457 is a remote code execution vulnerability in Azure CLI, rated Important by Microsoft, with a CVSS 3.1 base score of 8 (High). An attacker can exploit it remotely over the network, with low privileges and only if a user takes an action. Microsoft has not reported exploitation in the wild and rates exploitation as less likely. Microsoft released the fix on 10 November 2026 in the November 2026 Patch Tuesday. It affects 1 product in 1 product family (Azure).
Key facts
- CVE ID
- CVE-2026-109457
- Severity
- High CVSS 8
- Microsoft severity
- Important
- Impact
- Remote Code Execution
- Exploited in the wild
- No
- Publicly disclosed
- No
- Exploitation likelihood
- Less Likely
- Weakness
- CWE-78
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- November 2026 Patch Tuesday
- Product families
- Azure
CVSS score and vector
Microsoft scores CVE-2026-109457 at 8 (temporal 7) using CVSS 3.1. Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
| Metric | Value |
|---|---|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality impact | High |
| Integrity impact | High |
| Availability impact | High |
| Exploit code maturity | Unproven |
| Remediation level | Official fix |
| Report confidence | Confirmed |
Description
Improper neutralization of special elements used in an os command ('os command injection') in Azure CLI allows an authorized attacker to execute code over a network.
Frequently asked questions (Microsoft)
How could an attacker exploit this vulnerability?
An authenticated attacker with permission to submit jobs in a shared workspace could prepare a specially crafted job and convince another user to connect to it using Azure CLI. Successful exploitation could allow commands to run with that user's local permissions.
Affected products (1)
Azure
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Azure Machine Learning | Release Notes | Security Update | 2.45.1 | No |
NIST NVD data
- NVD status
- Awaiting Analysis
- NVD CVSS
- 8 (HIGH)
- NVD weakness
- CWE-78
- Published to NVD
- NVD last modified
References
Acknowledgments
- Jianyang Song
- NavSec
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. |