CVE-2026-42834: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows Admin Center in Azure Portal
Improper link resolution before file access ('link following') in Azure Portal Windows Admin Center allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CWE-59) in Windows Admin Center on Azure Portal arises from improper handling of symbolic links before accessing files. An authorized attacker with local access could exploit this flaw to escalate privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Since this is a cloud-hosted service, Microsoft manages remediation server-side and has released an official fix. Users should refer to the Microsoft advisory for detailed patch status and guidance.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher-level access than intended. This can compromise confidentiality, integrity, and availability of the affected system components within Windows Admin Center on Azure Portal. No public exploits are known currently.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability and manages remediation for this cloud-hosted service. Administrators should verify that their Azure Portal Windows Admin Center instances are updated according to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42834. No additional action is required beyond applying the official fix.
CVE-2026-42834: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows Admin Center in Azure Portal
Description
Improper link resolution before file access ('link following') in Azure Portal Windows Admin Center allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-59) in Windows Admin Center on Azure Portal arises from improper handling of symbolic links before accessing files. An authorized attacker with local access could exploit this flaw to escalate privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Since this is a cloud-hosted service, Microsoft manages remediation server-side and has released an official fix. Users should refer to the Microsoft advisory for detailed patch status and guidance.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher-level access than intended. This can compromise confidentiality, integrity, and availability of the affected system components within Windows Admin Center on Azure Portal. No public exploits are known currently.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability and manages remediation for this cloud-hosted service. Administrators should verify that their Azure Portal Windows Admin Center instances are updated according to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42834. No additional action is required beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T14:51:12.703Z
- 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-2026-42834","vendor":"Microsoft"}]
Threat ID: 6a0db4dcba1db473627ecd78
Added to database: 5/20/2026, 1:19:24 PM
Last enriched: 5/20/2026, 1:34:08 PM
Last updated: 5/20/2026, 6:10:23 PM
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.