What’s Vulnerable › Vulnerabilities

CVE-2021-1705: Microsoft Edge (HTML-based) Memory Corruption Vulnerability

• Severity: high (CVSS 7.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-12 · updated 2026-06-17

Description

Microsoft Edge (HTML-based) Memory Corruption Vulnerability

Affected products

• Microsoft Edge: all versions
• Microsoft Edge: from 1.0..0 before publication — fixed in publication

How to fix

Upgrade to a fixed version: Microsoft Edge publication. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1705
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1705

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