Multiple vulnerabilities in Microsoft Browser

Description

Multiple vulnerabilities were found in Microsoft Browser. Malicious users can exploit these vulnerabilities to cause denial of service, execute arbitrary code, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. Heap buffer overflow vulnerability in CSS can be exploited to cause denial of service.
2. Heap buffer overflow vulnerability in WebAudio can be exploited to cause denial of service.
3. Out of bounds read vulnerability in CSS can be exploited to cause denial of service.
4. Heap buffer overflow vulnerability in WebGL can be exploited to cause denial of service.
5. Out of bounds read vulnerability in WebAudio can be exploited to cause denial of service.
6. Use after free vulnerability in WebGPU can be exploited to cause denial of service or execute arbitrary code.
7. Integer overflow vulnerability in Fonts can be exploited to cause execute arbitrary code and denial of service.
8. Use after free vulnerability in FedCM can be exploited to cause denial of service or execute arbitrary code.
9. Security vulnerability can be exploited to bypass security restrictions.
10. Use after free vulnerability in Dawn can be exploited to cause denial of service or execute arbitrary code.

Original advisories

• CVE-2026-4677

• CVE-2026-4673
• CVE-2026-4674
• CVE-2026-4442
• CVE-2026-4680
• CVE-2026-32187
• CVE-2026-4675
• CVE-2026-4679
• CVE-2026-4678
• CVE-2026-4676

Exploitation

Related products

• Microsoft-Edge

CVE list

• CVE-2026-4442
  critical
• CVE-2026-4673
  critical
• CVE-2026-4674
  critical
• CVE-2026-4675
  critical
• CVE-2026-4676
  critical
• CVE-2026-4677
  critical
• CVE-2026-4678
  critical
• CVE-2026-4679
  critical
• CVE-2026-4680
  critical
• CVE-2026-32187
  unknown

KB list

Read more

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