CVE-2026-56645: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Edge (Chromium-based)
Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-122) in Microsoft Edge (Chromium-based) involves a heap-based buffer overflow that could be exploited by an attacker to execute arbitrary code remotely without privileges. The flaw affects version 1.0.0.0 of the product. Microsoft has published an official fix to address this issue, as detailed in their security advisory.
Potential Impact
Successful exploitation allows remote code execution with high impact on confidentiality, integrity, and availability. An attacker can run arbitrary code on the affected system without prior authentication, potentially leading to full system compromise.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56645 to remediate this vulnerability.
CVE-2026-56645: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Edge (Chromium-based)
Description
Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-122) in Microsoft Edge (Chromium-based) involves a heap-based buffer overflow that could be exploited by an attacker to execute arbitrary code remotely without privileges. The flaw affects version 1.0.0.0 of the product. Microsoft has published an official fix to address this issue, as detailed in their security advisory.
Potential Impact
Successful exploitation allows remote code execution with high impact on confidentiality, integrity, and availability. An attacker can run arbitrary code on the affected system without prior authentication, potentially leading to full system compromise.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56645 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-22T15:17:38.795Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56645","vendor":"Microsoft"}]
Threat ID: 6a4820ff27e9c79719acc390
Added to database: 07/03/2026, 20:52:15 UTC
Last enriched: 08/10/2026, 13:37:33 UTC
Last updated: 08/16/2026, 00:41:14 UTC
Views: 84
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