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) in Microsoft Edge (Chromium-based) is caused by improper handling of deserialization of untrusted data, classified under CWE-502. Exploitation could enable remote code execution by an attacker without privileges, requiring user interaction. The CVSS 3.1 base score is 8.3, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate the 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 affected environment. The vulnerability requires user interaction and has a high attack complexity.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the vendor-provided patch promptly to remediate the issue. No additional mitigations are specified beyond applying the official fix.
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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-58281) in Microsoft Edge (Chromium-based) is caused by improper handling of deserialization of untrusted data, classified under CWE-502. Exploitation could enable remote code execution by an attacker without privileges, requiring user interaction. The CVSS 3.1 base score is 8.3, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate the 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 affected environment. The vulnerability requires user interaction and has a high attack complexity.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the vendor-provided patch promptly to remediate the issue. No additional mitigations are specified beyond applying the official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-58281
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
- Remediation Level
- official-fix
Threat ID: 6a535c0b68715ace43ad7ae0
Added to database: 07/12/2026, 09:19:07 UTC
Last enriched: 07/30/2026, 22:52:12 UTC
Last updated: 07/31/2026, 19:24:49 UTC
Views: 66
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