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, identified as CVE-2026-58630 and classified under CWE-284 (Improper Access Control), affects Microsoft Azure App Service for Linux. It allows an attacker without privileges to elevate their privileges remotely over the network. The CVSS 3.1 base score is 10.0, indicating critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and complete confidentiality and integrity impact. The vendor has released an official fix and manages remediation for this cloud-hosted service. No known exploits in the wild have been reported at this time.
Potential Impact
An attacker can gain elevated privileges remotely on Azure App Service for Linux, potentially compromising confidentiality and integrity of the service. This could lead to unauthorized access and control over affected resources. Availability impact is not indicated.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability and manages remediation for the cloud-hosted Azure App Service for Linux. Users should ensure their service is updated according to Microsoft's guidance available at the official advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58630.
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, identified as CVE-2026-58630 and classified under CWE-284 (Improper Access Control), affects Microsoft Azure App Service for Linux. It allows an attacker without privileges to elevate their privileges remotely over the network. The CVSS 3.1 base score is 10.0, indicating critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and complete confidentiality and integrity impact. The vendor has released an official fix and manages remediation for this cloud-hosted service. No known exploits in the wild have been reported at this time.
Potential Impact
An attacker can gain elevated privileges remotely on Azure App Service for Linux, potentially compromising confidentiality and integrity of the service. This could lead to unauthorized access and control over affected resources. Availability impact is not indicated.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability and manages remediation for the cloud-hosted Azure App Service for Linux. Users should ensure their service is updated according to Microsoft's guidance available at the official advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58630.
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: 08/15/2026, 13:24:52 UTC
Last updated: 09/07/2026, 16:45:58 UTC
Views: 141
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