CVE-2026-58284: CWE-285: Improper Authorization in Microsoft Microsoft Edge (Chromium-based)
Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-285) in Microsoft Edge (Chromium-based) arises from improper authorization controls, enabling an attacker without privileges to execute code remotely over a network. The CVSS 3.1 base score is 8.3, reflecting high impact on confidentiality, integrity, and availability. The vulnerability is confirmed in version 1.0.0.0 of the product. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an unauthorized attacker to execute arbitrary code remotely, potentially leading to full compromise of the affected system. The vulnerability impacts confidentiality, integrity, and availability of the system running the affected Microsoft Edge version.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch promptly to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58284 for detailed update instructions.
CVE-2026-58284: CWE-285: Improper Authorization in Microsoft Microsoft Edge (Chromium-based)
Description
Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 8.3high
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-285) in Microsoft Edge (Chromium-based) arises from improper authorization controls, enabling an attacker without privileges to execute code remotely over a network. The CVSS 3.1 base score is 8.3, reflecting high impact on confidentiality, integrity, and availability. The vulnerability is confirmed in version 1.0.0.0 of the product. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an unauthorized attacker to execute arbitrary code remotely, potentially leading to full compromise of the affected system. The vulnerability impacts confidentiality, integrity, and availability of the system running the affected Microsoft Edge version.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch promptly to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58284 for detailed update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-29T21:59:30.870Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58284","vendor":"Microsoft"}]
Threat ID: 6a48210227e9c79719accbe5
Added to database: 07/03/2026, 20:52:18 UTC
Last enriched: 08/10/2026, 13:42:57 UTC
Last updated: 08/16/2026, 00:41:14 UTC
Views: 118
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.