CVE-2026-50656: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Microsoft Malware Protection Engine
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ".
AI Analysis
Technical Summary
This vulnerability involves improper link resolution before file access in the Microsoft Malware Protection Engine, leading to an elevation of privilege condition. The issue is tracked as CWE-59 and affects version 1.1.0.0 of the product. The CVSS v3.1 base score is 7.8, indicating high severity, with attack vector local, low attack complexity, low privileges required, no user interaction, and impacts confidentiality, integrity, and availability. Microsoft has published an advisory but has not yet provided a patch or official remediation.
Potential Impact
An attacker with local access and limited privileges could exploit this vulnerability to elevate their privileges, potentially gaining higher-level access on the affected system. This could compromise the confidentiality, integrity, and availability of the system. However, there are no known exploits in the wild currently.
Mitigation Recommendations
As of the latest Microsoft advisory, no official fix or patch is available for this vulnerability. Users should monitor the Microsoft Security Response Center for updates and apply any future patches promptly once released. Until a fix is provided, limiting local access and applying standard security best practices may reduce exposure, but no specific workaround is documented.
CVE-2026-50656: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Microsoft Malware Protection Engine
Description
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ".
CVSS v3.1
Score 7.8high
Affected software
Microsoft
Microsoft Malware Protection Engine
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper link resolution before file access in the Microsoft Malware Protection Engine, leading to an elevation of privilege condition. The issue is tracked as CWE-59 and affects version 1.1.0.0 of the product. The CVSS v3.1 base score is 7.8, indicating high severity, with attack vector local, low attack complexity, low privileges required, no user interaction, and impacts confidentiality, integrity, and availability. Microsoft has published an advisory but has not yet provided a patch or official remediation.
Potential Impact
An attacker with local access and limited privileges could exploit this vulnerability to elevate their privileges, potentially gaining higher-level access on the affected system. This could compromise the confidentiality, integrity, and availability of the system. However, there are no known exploits in the wild currently.
Mitigation Recommendations
As of the latest Microsoft advisory, no official fix or patch is available for this vulnerability. Users should monitor the Microsoft Security Response Center for updates and apply any future patches promptly once released. Until a fix is provided, limiting local access and applying standard security best practices may reduce exposure, but no specific workaround is documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-05T14:33:50.831Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- unavailable
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50656","vendor":"Microsoft"}]
Threat ID: 6a3196620b89be688808a42c
Added to database: 06/16/2026, 18:30:58 UTC
Last enriched: 08/13/2026, 13:35:36 UTC
Last updated: 09/15/2026, 10:01:32 UTC
Views: 568
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.
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.