RCE in Microsoft Azure Cloud Shell

CVE-2026-35428

Improper neutralization of special elements used in a command ('command injection') in Azure Cloud Shell allows an unauthorized attacker to perform spoofing over a network.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-35428: held from 0.009 to 0.009.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: -0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-35428?
CVE-2026-35428 is a critical-severity vulnerability in Microsoft Azure Cloud Shell, classified under Command Injection. CVSS score: 9.6/10. Published 2026-05-07.
How severe is CVE-2026-35428?
Critical severity. CVSS v3 base score is 9.6 out of 10.