CVE-2026-58630: CWE-284: Improper Access Control in Microsoft Azure App Service for Linux
Improper access control in Azure App Service allows an unauthorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58630) in Microsoft Azure App Service for Linux is categorized as CWE-284 (Improper Access Control). It enables an attacker with network access and no privileges or user interaction to escalate privileges, impacting confidentiality and integrity with a critical severity (CVSS 10.0). As a cloud-hosted service, Microsoft manages the remediation and has released an official fix. The vulnerability is publicly disclosed and patched according to the vendor advisory.
Potential Impact
An attacker can gain elevated privileges remotely without authentication or user interaction, leading to a complete compromise of confidentiality and integrity of the Azure App Service for Linux environment. Availability is not impacted. This poses a critical risk to affected tenants and workloads hosted on the service.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability and manages remediation for this cloud-hosted service. Customers should verify that their Azure App Service for Linux instances are updated according to Microsoft's guidance at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58630. No additional action is required beyond applying the official fix.
CVE-2026-58630: CWE-284: Improper Access Control in Microsoft Azure App Service for Linux
Description
Improper access control in Azure App Service allows an unauthorized attacker to elevate privileges over a network.
CVSS v3.1
Score 10.0critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-58630) in Microsoft Azure App Service for Linux is categorized as CWE-284 (Improper Access Control). It enables an attacker with network access and no privileges or user interaction to escalate privileges, impacting confidentiality and integrity with a critical severity (CVSS 10.0). As a cloud-hosted service, Microsoft manages the remediation and has released an official fix. The vulnerability is publicly disclosed and patched according to the vendor advisory.
Potential Impact
An attacker can gain elevated privileges remotely without authentication or user interaction, leading to a complete compromise of confidentiality and integrity of the Azure App Service for Linux environment. Availability is not impacted. This poses a critical risk to affected tenants and workloads hosted on the service.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability and manages remediation for this cloud-hosted service. Customers should verify that their Azure App Service for Linux instances are updated according to Microsoft's guidance at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58630. No additional action is required beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T21:14:44.616Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58630","vendor":"Microsoft"}]
Threat ID: 6a637ff99c2644c7f8203e26
Added to database: 07/24/2026, 15:08:41 UTC
Last enriched: 07/24/2026, 15:22:05 UTC
Last updated: 07/24/2026, 23:13:17 UTC
Views: 10
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