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Actively exploited

Listed in CISA’s Known Exploited Vulnerabilities catalog since November 3, 2021.

Known ransomware use

CVE-2021-26411

Microsoft Internet Explorer Memory Corruption Vulnerability

Microsoft · Internet Explorer

Added to KEV November 3, 2021

Alert details

Source feed
CISA KEV
CVE ID
CVE-2021-26411
CWE
CWE-416
Affected products
Internet Explorer · Microsoft Internet Explorer · Microsoft

What happened

Microsoft Internet Explorer contains an unspecified vulnerability that allows for memory corruption.

What it means for your business

Microsoft Internet Explorer is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2021-26411). Microsoft Internet Explorer contains an unspecified vulnerability that allows for memory corruption. CISA remediation due date: 2021-11-17. If you need help checking exposure, call (864) 335-9223.

Required action

Apply updates per vendor instructions.

CISA due date: November 17, 2021

Sources

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