CVE-2026-57981: CWE-416: Use After Free in Microsoft Microsoft Edge (Chromium-based)
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-416 (Use After Free), affects Microsoft Edge (Chromium-based) version 1.0.0.0. It allows an attacker to execute arbitrary code over a network without privileges, requiring user interaction. The vulnerability has been officially fixed by Microsoft, as indicated in their security advisory.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but does require user interaction to exploit the vulnerability.
Mitigation Recommendations
Apply the official security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57981. This patch addresses the use-after-free vulnerability and mitigates the risk of remote code execution.
CVE-2026-57981: CWE-416: Use After Free in Microsoft Microsoft Edge (Chromium-based)
Description
Use after free 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, identified as CWE-416 (Use After Free), affects Microsoft Edge (Chromium-based) version 1.0.0.0. It allows an attacker to execute arbitrary code over a network without privileges, requiring user interaction. The vulnerability has been officially fixed by Microsoft, as indicated in their security advisory.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but does require user interaction to exploit the vulnerability.
Mitigation Recommendations
Apply the official security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57981. This patch addresses the use-after-free vulnerability and mitigates the risk of remote code execution.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-26T17:45:44.854Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57981","vendor":"Microsoft"}]
Threat ID: 6a48210127e9c79719accb4a
Added to database: 07/03/2026, 20:52:17 UTC
Last enriched: 08/17/2026, 14:10:00 UTC
Last updated: 08/17/2026, 22:35:43 UTC
Views: 64
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.
External Links
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.