What is CVE-2026-100207?

CVE-2026-100207 is a high-severity vulnerability in Microsoft Azure Cyclecloud 8.9.1, classified under OS Command Injection. CVSS score: 7.3/10. Published 2026-10-13.

How severe is CVE-2026-100207?

High severity. CVSS v3 base score is 7.3 out of 10.

RCE in Microsoft Azure Cyclecloud 8.9.1

CVE-2026-100207

Improper neutralization of special elements used in an os command ('os command injection') in Azure CycleCloud allows an authorized attacker to execute code locally.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

Azure CycleCloud Remote Code Execution Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-100207?: CVE-2026-100207 is a high-severity vulnerability in Microsoft Azure Cyclecloud 8.9.1, classified under OS Command Injection. CVSS score: 7.3/10. Published 2026-10-13.
How severe is CVE-2026-100207?: High severity. CVSS v3 base score is 7.3 out of 10.