OnlyFm252
Microsoft Edge (Chromium-based) in IE Mode

CVE-2021-41351 — Microsoft Edge (Chrome based) Spoofing on IE Mode

Important CVSS 4.3 EPSS 0.036 2021-11 archive

Executive Summary

None

Overview

4.3
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Spoofing
Released Nov 9 2021
Last Updated Nov 9 2021
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.036 — 0.87974 percentile
NVD CVSS 4.3 MEDIUM — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
Low
INTEGRITY
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 3.9

EPSS Score

0.036
probability of exploitation in the next 30 days
0.87974 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

17 affected products
Product KB Article Severity Impact Restart Required
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1809 for 32-bit Systems 5007206 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1809 for ARM64-based Systems 5007206 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1809 for x64-based Systems 5007206 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1909 for 32-bit Systems 5007189 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1909 for ARM64-based Systems 5007189 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1909 for x64-based Systems 5007189 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 2004 for 32-bit Systems 5007186 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 2004 for ARM64-based Systems 5007186 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 2004 for x64-based Systems 5007186 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 20H2 for 32-bit Systems 5007186 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 20H2 for ARM64-based Systems 5007186 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 21H1 for 32-bit Systems 5007186 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 21H1 for ARM64-based Systems 5007186 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 21H1 for x64-based Systems 5007186 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 11 version 21H2 for ARM64-based Systems 5007215 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows 11 version 21H2 for x64-based Systems 5007215 (Security Update) Important Spoofing Yes
Microsoft Edge (Chromium-based) in IE Mode on Windows Server 2019 5007206 (Security Update) Important Spoofing Yes

Patches

4 patches
Article Type Restart
5007206 Security Update Yes
5007189 Security Update Yes
5007186 Security Update Yes
5007215 Security Update Yes

Known Exploits

Acknowledgments

@Windowsrcer

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