Microsoft Azure Front Door: Elevation of privilege due to incorrect permissions
Summary
Microsoft Azure Front Door (AFD), a global entry point for web applications that Microsoft operates as a cloud service, contains an incorrect permission assignment for a critical resource (CWE-732). An unauthorized attacker with network access, no privileges and no user interaction can elevate privileges, with high impact on confidentiality and low impact on integrity and availability. Customers do not install AFD, so the fix is expected to be applied by Microsoft; the sources do not confirm whether customer action is required.
Affected
- Microsoft Azure Front Door (cloud service)
- The CNA lists the range 1.0.0 before publication. This is a service-range placeholder, not a customer-installable version.
Fixed in
Unknown.
Workaround
- No vendor workaround identified in the sources.
- General hardening (not vendor-confirmed for this CVE): inventory AFD profiles, endpoints, routing rules and WAF policies, restrict RBAC roles on Front Door, and review configuration change history.
Exploitation
- Not reported as exploited in the wild; not listed in KEV at time of research.
- CISA SSVC: Exploitation none, Automatable yes, Technical Impact partial.
- No public proof of concept found.
Our recommendation
- Open the MSRC advisory and check the customer action field and fixed-state note.
- Ask which public web applications sit behind AFD and record their exposure.
- Review AFD RBAC assignments and configuration change logs.
- Re-check NVD and KEV once analysis is complete.
Information from Microsoft (Patch Tuesday November 2026)
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- MSRC Security Update Guide: CVE-2026-118742 msrc.microsoft.com
- CVE Record CVE-2026-118742 (CVE.org) www.cve.org
- Rapid7 Patch Tuesday November 2026 www.rapid7.com
- Strix CVE-2026-118742 details www.strix.ai
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 01:11.
Original description (NVD)
Incorrect permission assignment for critical resource in Azure Front Door (AFD) allows an unauthorized attacker to elevate privileges over a network.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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