Internet Explorer Memory Corruption Vulnerability
CVE-2021-26411

8.8HIGH

Key Information:

Vendor
Microsoft
Status
Internet Explorer 9
Internet Explorer 11
Microsoft Edge (edgehtml-based)
Vendor
CVE Published:
11 March 2021

Badges

💰 Ransomware👾 Exploit Exists🟡 Public PoC🟣 EPSS 76%🦅 CISA Reported

Summary

Internet Explorer Memory Corruption Vulnerability

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited and is known by the CISA as enabling ransomware campaigns.

The CISA's recommendation is: Apply updates per vendor instructions.

Affected Version(s)

Internet Explorer 11 Windows 10 Version 1803 for 32-bit Systems 1.0.0

Internet Explorer 9 Windows Server 2008 for 32-bit Systems Service Pack 2 1.0.0

Microsoft Edge (EdgeHTML-based) Windows 10 Version 1803 for 32-bit Systems 1.0..0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-26411
Created by CrackerCat

References

https://portal.msrc.microsoft.com/en-US/security-guidance...
x_refsource_MISC

EPSS Score

76% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 💰

    Used in Ransomware

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre DatabaseCISA Database1 Proof of Concept(s)
.