CVE-2026-58281: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft Edge (Chromium-based)
CVE-2026-58281 is a high-severity vulnerability in Microsoft Edge (Chromium-based) involving deserialization of untrusted data. This flaw could allow an unauthorized attacker to execute code remotely over a network. The vulnerability affects version 1.0.0.0 of Microsoft Edge (Chromium-based). An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58281) is classified as CWE-502: Deserialization of Untrusted Data in Microsoft Edge (Chromium-based). It allows remote code execution by processing maliciously crafted serialized data. The CVSS 3.1 score is 8.3, indicating high severity, with network attack vector, high impact on confidentiality, integrity, and availability, and requiring user interaction and high attack complexity. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation of this vulnerability could allow 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 to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58281 for detailed patching instructions.
CVE-2026-58281: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft Edge (Chromium-based)
Description
CVE-2026-58281 is a high-severity vulnerability in Microsoft Edge (Chromium-based) involving deserialization of untrusted data. This flaw could allow an unauthorized attacker to execute code remotely over a network. The vulnerability affects version 1.0.0.0 of Microsoft Edge (Chromium-based). An official fix is available from Microsoft.
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 allows remote code execution by processing maliciously crafted serialized data. The CVSS 3.1 score is 8.3, indicating high severity, with network attack vector, high impact on confidentiality, integrity, and availability, and requiring user interaction and high attack complexity. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation of this vulnerability could allow 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 to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58281 for detailed patching 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-2026-58281","vendor":"Microsoft"}]
Threat ID: 6a52af8c68715ace43718222
Added to database: 07/11/2026, 21:03:08 UTC
Last enriched: 07/11/2026, 21:17:27 UTC
Last updated: 07/12/2026, 00:29:43 UTC
Views: 33
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