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High severity · published Mar 11, 2021
CVE-2021-26411
Internet Explorer Memory Corruption Vulnerability
RansomwareIn wildKEV
8.8
CVSS
81.7%
EPSS
Yes
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
High
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)81.7% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 3, 2021
Federal remediation dueNov 17, 2021
Ransomware campaign useKnown
Affected products
Which versions
IE
Internet Explorer 11 · Microsoft
1.0.0 before 10.0.17134.2087 · source: vendor
IE
Internet Explorer 9 · Microsoft
1.0.0 before 6.0.6003.21070 · source: vendor
ME
Microsoft Edge (EdgeHTML-based) · Microsoft
1.0..0 before 10.0.17134.2087 · source: vendor
ED
Edge · Microsoft
All versions, or not specified · source: NVD
IE
Internet Explorer · Microsoft
11; 9 · source: NVD, KEV
Affected product
IE
Internet Explorer 11
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26411
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26411
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26411
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