What is CVE-2026-81349?

CVE-2026-81349 is a high-severity vulnerability in Microsoft Azure Hdinsight, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-09-08.

How severe is CVE-2026-81349?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Microsoft Azure Hdinsight

CVE-2026-81349

Improper neutralization of special elements used in an os command ('os command injection') in Azure HDInsights allows an authorized attacker to elevate privileges over a network.

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Azure Hdinsight

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-81349?: CVE-2026-81349 is a high-severity vulnerability in Microsoft Azure Hdinsight, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-09-08.
How severe is CVE-2026-81349?: High severity. CVSS v3 base score is 7.2 out of 10.