CVE-2026-35428
CVE-2026-35428 is a critical-severity vulnerability in Microsoft Azure Cloud Shell with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Critical (CVSS 3.x base score 9.6)
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-28453
- Weakness: CWE-77
- Affected product: Microsoft Azure Cloud Shell
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2026-35428?
- CVE-2026-35428 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-35428 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-35428?
- CVE-2026-35428 affects Microsoft Azure Cloud Shell. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-35428?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-35428 have an EU (EUVD) identifier?
- Yes. CVE-2026-35428 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28453.
- When was CVE-2026-35428 published?
- CVE-2026-35428 was published on 2026-05-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:azure_cloud_shell:-:*:*:*:*:*:*:*
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