CVE-2026-100207 Azure CycleCloud Remote Code Execution Vulnerability
An authorized attacker can execute arbitrary code locally via OS command injection in Azure CycleCloud.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-100207?
CVE-2026-100207 is a high-severity command injection vulnerability in Microsoft Azure CycleCloud 8.9.1, published on 13 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Improper neutralization of special elements used in an os command ('os command injection') in Azure CycleCloud allows an authorized attacker to execute code locally.
Weakness: CWE-78
Which versions are affected by CVE-2026-100207?
How do I fix CVE-2026-100207?
No fix has been published for CVE-2026-100207 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-100207 being exploited?
There is no known exploitation of CVE-2026-100207 in the wild and no public exploit code.
Sources
Also known as GHSA-cj7w-cm7f-2rpj.