CVE-2026-72970: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Edge (Chromium-based)
A heap-based buffer overflow vulnerability (CWE-122) exists in Microsoft Edge (Chromium-based) that could allow an unauthorized attacker to execute code remotely over a network. The vulnerability has a high severity with a CVSS score of 8.3. An official fix is available from Microsoft.
AI Analysis
Technical Summary
CVE-2026-72970 is a heap-based buffer overflow vulnerability in Microsoft Edge (Chromium-based) that enables remote code execution by an attacker without privileges. The flaw allows execution of arbitrary code over a network, potentially compromising confidentiality, integrity, and availability. The vulnerability affects version 1.0.0.0 of Microsoft Edge (Chromium-based). Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely, leading to full compromise of the affected system. The CVSS score of 8.3 indicates high impact on confidentiality, integrity, and low impact on availability.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the provided patch promptly to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-72970: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Edge (Chromium-based)
Description
A heap-based buffer overflow vulnerability (CWE-122) exists in Microsoft Edge (Chromium-based) that could allow an unauthorized attacker to execute code remotely over a network. The vulnerability has a high severity with a CVSS score of 8.3. An official fix is available from Microsoft.
CVSS v3.1
Score 8.3high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-72970 is a heap-based buffer overflow vulnerability in Microsoft Edge (Chromium-based) that enables remote code execution by an attacker without privileges. The flaw allows execution of arbitrary code over a network, potentially compromising confidentiality, integrity, and availability. The vulnerability affects version 1.0.0.0 of Microsoft Edge (Chromium-based). Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely, leading to full compromise of the affected system. The CVSS score of 8.3 indicates high impact on confidentiality, integrity, and low impact on availability.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the provided patch promptly to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-rmf3-9hmx-hc46
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-72970"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- Remediation Level
- official-fix
- State
- PUBLISHED
Threat ID: 6a7ff600bf8831d539880a89
Added to database: 08/15/2026, 05:15:44 UTC
Last enriched: 09/29/2026, 21:29:23 UTC
Last updated: 09/30/2026, 06:56:32 UTC
Views: 79
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.