CVE-2026-72970: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Edge (Chromium-based)
CVE-2026-72970 is a heap-based buffer overflow vulnerability in Microsoft Edge (Chromium-based) that allows an unauthorized attacker to execute code remotely over a network. The vulnerability affects versions from 1.0.0.0 up to but not including 151.0.4129.86. Microsoft has released an official fix to address this issue. The vulnerability has a high severity score of 8.3 and requires user interaction for exploitation.
AI Analysis
Technical Summary
This vulnerability is a heap-based buffer overflow in Microsoft Edge (Chromium-based) that enables remote code execution by an attacker without privileges. It affects versions >=1.0.0.0 and <151.0.4129.86. The CVSS 3.1 base score is 8.3, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code remotely on the affected system, potentially leading to full compromise of the user's environment. The vulnerability impacts confidentiality, integrity, and availability with high severity. Exploitation requires user interaction but no privileges or complex attack conditions.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update for Microsoft Edge (Chromium-based) to versions 151.0.4129.86 or later to remediate this vulnerability. No additional mitigation actions are required once the update is applied.
CVE-2026-72970: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Edge (Chromium-based)
Description
CVE-2026-72970 is a heap-based buffer overflow vulnerability in Microsoft Edge (Chromium-based) that allows an unauthorized attacker to execute code remotely over a network. The vulnerability affects versions from 1.0.0.0 up to but not including 151.0.4129.86. Microsoft has released an official fix to address this issue. The vulnerability has a high severity score of 8.3 and requires user interaction for exploitation.
CVSS v3.1
Score 8.3high
Affected software
Microsoft
Microsoft Edge (Chromium-based)
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap-based buffer overflow in Microsoft Edge (Chromium-based) that enables remote code execution by an attacker without privileges. It affects versions >=1.0.0.0 and <151.0.4129.86. The CVSS 3.1 base score is 8.3, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code remotely on the affected system, potentially leading to full compromise of the user's environment. The vulnerability impacts confidentiality, integrity, and availability with high severity. Exploitation requires user interaction but no privileges or complex attack conditions.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update for Microsoft Edge (Chromium-based) to versions 151.0.4129.86 or later to remediate this vulnerability. No additional mitigation actions are required once the update is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-10T18:36:42.030Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72970","vendor":"Microsoft"}]
Threat ID: 6a7f5a78bf8831d539821056
Added to database: 08/14/2026, 18:12:08 UTC
Last enriched: 09/29/2026, 03:03:07 UTC
Last updated: 09/29/2026, 03:03:07 UTC
Views: 113
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