CVE-2021-26411 KEV
8.8
HIGH · CVSS 3.1 · EPSS 80.8% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2021-11-17.
Description
Internet Explorer Memory Corruption Vulnerability
Scoring
| CVSS | 8.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L |
| EPSS | 80.77% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-416 |
| On CISA KEV | yes — remediate by 2021-11-17 |
| Public exploit | none known |
| Published | 2021-03-11 |
| Last modified | 2026-08-19 |
CISA KEV
| Name | Microsoft Internet Explorer Memory Corruption Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2021-11-17 |
| Vendor / product | Microsoft / Internet Explorer |
| Ransomware use | known |
Affected (17)
| Vendor | Product |
|---|---|
| microsoft | edge |
| microsoft | internet explorer |
| microsoft | windows 10 1507 |
| microsoft | windows 10 1607 |
| microsoft | windows 10 1803 |
| microsoft | windows 10 1809 |
| microsoft | windows 10 1903 |
| microsoft | windows 10 1909 |
| microsoft | windows 10 2004 |
| microsoft | windows 10 20h2 |
| microsoft | windows 7 |
| microsoft | windows 8.1 |
| microsoft | windows rt 8.1 |
| microsoft | windows server 2008 |
| microsoft | windows server 2012 |
| microsoft | windows server 2016 |
| microsoft | windows server 2019 |
References
→ the Explorer · watch your stack · NVD