CVE-2026-57990: CWE-552: Files or Directories Accessible to External Parties in Microsoft Microsoft Edge (Chromium-based)
Files or directories accessible to external parties in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-552, affects Microsoft Edge (Chromium-based) and allows unauthorized attackers to access files or directories that should not be externally accessible. This leads to information disclosure over a network without requiring privileges, but user interaction is needed. The vulnerability has a CVSS 3.1 base score of 7.4, indicating high severity. Microsoft has released an official fix for this issue.
Potential Impact
An attacker can disclose sensitive information remotely without privileges but requires user interaction. The confidentiality impact is high, while integrity and availability are not affected. This could lead to leakage of sensitive data accessible through the browser.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the latest security updates for Microsoft Edge (Chromium-based) as provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57990. No additional mitigation steps are indicated by the vendor.
CVE-2026-57990: CWE-552: Files or Directories Accessible to External Parties in Microsoft Microsoft Edge (Chromium-based)
Description
Files or directories accessible to external parties in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
CVSS v3.1
Score 7.4high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-552, affects Microsoft Edge (Chromium-based) and allows unauthorized attackers to access files or directories that should not be externally accessible. This leads to information disclosure over a network without requiring privileges, but user interaction is needed. The vulnerability has a CVSS 3.1 base score of 7.4, indicating high severity. Microsoft has released an official fix for this issue.
Potential Impact
An attacker can disclose sensitive information remotely without privileges but requires user interaction. The confidentiality impact is high, while integrity and availability are not affected. This could lead to leakage of sensitive data accessible through the browser.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the latest security updates for Microsoft Edge (Chromium-based) as provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57990. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-26T17:45:44.854Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57990","vendor":"Microsoft"}]
Threat ID: 6a66498b9c2644c7f82a56ca
Added to database: 07/26/2026, 17:53:15 UTC
Last enriched: 08/13/2026, 15:58:24 UTC
Last updated: 09/09/2026, 11:05:01 UTC
Views: 147
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