CVE-2026-77897: CWE-23: Relative Path Traversal in Microsoft Power Automate agent for virtual desktops
Relative path traversal in Power Automate allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-77897) involves a relative path traversal flaw in Microsoft Power Automate agent for virtual desktops version 1.0.0.0. An authorized attacker with local access can exploit this flaw to elevate privileges by manipulating file paths to access or modify unintended files. The issue is classified under CWE-23 (Relative Path Traversal). Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges on the affected system, potentially leading to full compromise of the Power Automate agent environment. The CVSS v3.1 score of 7 indicates high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77897 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
CVE-2026-77897: CWE-23: Relative Path Traversal in Microsoft Power Automate agent for virtual desktops
Description
Relative path traversal in Power Automate allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-77897) involves a relative path traversal flaw in Microsoft Power Automate agent for virtual desktops version 1.0.0.0. An authorized attacker with local access can exploit this flaw to elevate privileges by manipulating file paths to access or modify unintended files. The issue is classified under CWE-23 (Relative Path Traversal). Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges on the affected system, potentially leading to full compromise of the Power Automate agent environment. The CVSS v3.1 score of 7 indicates high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77897 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-21T17:26:55.612Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77897","vendor":"Microsoft"}]
Threat ID: 6aa0455bacd9273b49faa02a
Added to database: 09/08/2026, 17:26:51 UTC
Last enriched: 09/08/2026, 21:37:21 UTC
Last updated: 09/09/2026, 01:02:31 UTC
Views: 3
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