CVE-2023-21777
CVE-2023-21777 is a high-severity vulnerability in Microsoft Azure App Service On Azure Stack with a CVSS 3.x base score of 8.7. 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-269.
Key facts
- Severity: High (CVSS 3.x base score 8.7)
- EPSS exploit prediction: 0% (27th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-269
- Affected product: Microsoft Azure App Service On Azure Stack
- Published:
- Last modified:
Description
Azure App Service on Azure Stack Hub Elevation of Privilege Vulnerability
Frequently asked questions
- What is CVE-2023-21777?
- Azure App Service on Azure Stack Hub Elevation of Privilege Vulnerability
- How severe is CVE-2023-21777?
- CVE-2023-21777 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
- Is CVE-2023-21777 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-21777?
- CVE-2023-21777 affects Microsoft Azure App Service On Azure Stack. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-21777?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2023-21777 published?
- CVE-2023-21777 was published on 2023-02-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:azure_app_service_on_azure_stack:-:*:*:*:*:*:*:*
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