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TI-2021-13531 Aliases CVE-2021-34506GHSA-p867-x78v-q6hq

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Priority LOW 32Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02205 82nd percentileScored 2026-11-07
Fix Fixed Microsoft Edge (Chromium-based) (Microsoft): 91.0.864.59

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Edge (Chromium-based)1.0.0 to before 91.0.864.5991.0.864.59Patch availableCNA
  • Microsoft Edge (Chromium-based) VendorMicrosoft Affected 1.0.0 to before 91.0.864.59 Fixed in 91.0.864.59 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*before 91.0.864.59VulnerableMicrosoft
  • cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:* Versions before 91.0.864.59 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft Edge (Chromium-based) (Microsoft) Fixed in 91.0.864.59

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-34506
  2. 2026-10-03 Alias added: GHSA-p867-x78v-q6hq

References

Patch 1

  • TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2022-03781 Out-of-bounds write in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2025-12953 Memory corruption in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2025-04867 Out-of-bounds read in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2024-07384 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 325 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences