CVEvulnerability
CVE-2021-26411
CISA Known Exploited Vulnerability
Microsoft Internet Explorer Memory Corruption Vulnerability — Microsoft Internet Explorer
Microsoft Internet Explorer contains an unspecified vulnerability that allows for memory corruption.
- Added to KEV
- 2021-11-03
- Remediation due
- 2021-11-17
- Ransomware use
- Known
- Required action
- Apply updates per vendor instructions.
- Notes
- https://nvd.nist.gov/vuln/detail/CVE-2021-26411
- Status
- Analyzed
- Published
- 2021-03-11
- Last modified
- 2026-10-01
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 5.1 MEDIUM — AV:N/AC:H/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-416
Description
Internet Explorer Memory Corruption Vulnerability
Affected configurations
• microsoft edge
• microsoft internet explorer 11
• microsoft internet explorer 9
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26411 Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26411 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26411 US Government Resource