CVE-2026-57991: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Microsoft Edge (Chromium-based)
Improper link resolution before file access ('link following') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-57991 in Microsoft Edge (Chromium-based) is classified under CWE-59 (Improper Link Resolution Before File Access). It allows an attacker without privileges to cause information disclosure by exploiting how the browser resolves symbolic links before accessing files. The issue affects version 1.0.0.0 of Microsoft Edge (Chromium-based). Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation of this vulnerability can lead to unauthorized disclosure of information over a network. The CVSS vector indicates that the attack can be performed remotely without privileges but requires user interaction. The impact is limited to confidentiality with no integrity or availability impact reported.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57991 to remediate this vulnerability.
CVE-2026-57991: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Microsoft Edge (Chromium-based)
Description
Improper link resolution before file access ('link following') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
CVSS v3.1
Score 7.4high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-57991 in Microsoft Edge (Chromium-based) is classified under CWE-59 (Improper Link Resolution Before File Access). It allows an attacker without privileges to cause information disclosure by exploiting how the browser resolves symbolic links before accessing files. The issue affects version 1.0.0.0 of Microsoft Edge (Chromium-based). Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation of this vulnerability can lead to unauthorized disclosure of information over a network. The CVSS vector indicates that the attack can be performed remotely without privileges but requires user interaction. The impact is limited to confidentiality with no integrity or availability impact reported.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57991 to remediate this vulnerability.
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-2026-57991","vendor":"Microsoft"}]
Threat ID: 6a48210227e9c79719accbd0
Added to database: 07/03/2026, 20:52:18 UTC
Last enriched: 07/03/2026, 21:05:18 UTC
Last updated: 07/03/2026, 22:52:00 UTC
Views: 3
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