CVE-2026-66312: CWE-126: Buffer Over-read in Microsoft Microsoft Edge (Chromium-based)
Buffer over-read in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-66312) involves a buffer over-read in Microsoft Edge (Chromium-based). It allows an attacker with authorized network access to execute code remotely. The vulnerability is classified under CWE-126 (Buffer Over-read). Microsoft has published an official fix to remediate this issue.
Potential Impact
The vulnerability can lead to remote code execution by an authorized attacker over a network, potentially compromising confidentiality. Integrity and availability impacts are not indicated. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided security update from the Microsoft Security Response Center advisory to remediate this vulnerability.
CVE-2026-66312: CWE-126: Buffer Over-read in Microsoft Microsoft Edge (Chromium-based)
Description
Buffer over-read in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 6.5medium
Affected software
Microsoft
Microsoft Edge (Chromium-based)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-66312) involves a buffer over-read in Microsoft Edge (Chromium-based). It allows an attacker with authorized network access to execute code remotely. The vulnerability is classified under CWE-126 (Buffer Over-read). Microsoft has published an official fix to remediate this issue.
Potential Impact
The vulnerability can lead to remote code execution by an authorized attacker over a network, potentially compromising confidentiality. Integrity and availability impacts are not indicated. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided security update from the Microsoft Security Response Center advisory to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-24T18:06:51.295Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66312","vendor":"Microsoft"}]
Threat ID: 6a7121fcbf32cb7a3462c05b
Added to database: 08/03/2026, 23:19:24 UTC
Last enriched: 08/11/2026, 14:57:55 UTC
Last updated: 09/18/2026, 01:04:25 UTC
Views: 31
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