CVE-2026-58281: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft Edge (Chromium-based)
Deserialization of untrusted data in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58281) is classified as CWE-502: Deserialization of Untrusted Data in Microsoft Edge (Chromium-based). It enables remote code execution by processing maliciously crafted serialized data. The CVSS 3.1 base score is 8.3, indicating high severity, with network attack vector, high attack complexity, no privileges required, and user interaction required. The scope is changed, and the impact includes high confidentiality, integrity, and availability impacts. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code remotely on the affected system, potentially leading to full compromise of confidentiality, integrity, and availability of the system running Microsoft Edge (Chromium-based) version 1.0.0.0.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58281 to remediate this vulnerability.
CVE-2026-58281: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft Edge (Chromium-based)
Description
Deserialization of untrusted data in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 8.3high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-58281) is classified as CWE-502: Deserialization of Untrusted Data in Microsoft Edge (Chromium-based). It enables remote code execution by processing maliciously crafted serialized data. The CVSS 3.1 base score is 8.3, indicating high severity, with network attack vector, high attack complexity, no privileges required, and user interaction required. The scope is changed, and the impact includes high confidentiality, integrity, and availability impacts. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code remotely on the affected system, potentially leading to full compromise of confidentiality, integrity, and availability of the system running Microsoft Edge (Chromium-based) version 1.0.0.0.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58281 to remediate this vulnerability.
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-2026-58281","vendor":"Microsoft"}]
Threat ID: 6a52af8c68715ace43718222
Added to database: 07/11/2026, 21:03:08 UTC
Last enriched: 08/13/2026, 15:59:12 UTC
Last updated: 08/25/2026, 22:52:12 UTC
Views: 235
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