Microsoft Edge (HTML-based)
CVE-2021-1705 — Microsoft Edge (HTML-based) Memory Corruption Vulnerability
Executive Summary
None
Overview
4.2
CVSS MEDIUM
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
Low
INTEGRITY
Low
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 3.8
EPSS Score
0.01916
probability of exploitation in the next 30 days
0.77719 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
21 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems | 4598231 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems | 4598231 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems | 4598243 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems | 4598243 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems | 4598245 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems | 4598245 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems | 4598245 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems | 4598230 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems | 4598230 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems | 4598230 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for 32-bit Systems | 4598229 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for ARM64-based Systems | 4598229 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for x64-based Systems | 4598229 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for 32-bit Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for ARM64-based Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for x64-based Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 20H2 for 32-bit Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 20H2 for ARM64-based Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 20H2 for x64-based Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2016 | 4598243 (Security Update) |
Moderate | Remote Code Execution | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2019 | 4598230 (Security Update) |
Moderate | Remote Code Execution | Yes |
Patches
6 patches
| Article | Type | Restart |
|---|---|---|
4598231 |
Security Update | Yes |
4598243 |
Security Update | Yes |
4598245 |
Security Update | Yes |
4598230 |
Security Update | Yes |
4598229 |
Security Update | Yes |
4598242 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
HAO LI of VenusTech ADLab
References
On This Page