CVE-2020-0968
Published: November 3, 2021
Official Description
Microsoft Internet Explorer contains a memory corruption vulnerability due to how the Scripting Engine handles objects in memory, leading to remote code execution.
CISA KEV Advisory
Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
Microsoft Internet Explorer contains a memory corruption vulnerability due to how the Scripting Engine handles objects in memory, leading to remote code execution.
Apply updates per vendor instructions.
Risk Analysis
This CVE describes a memory corruption vulnerability in Microsoft Internet Explorer, specifically in how the Scripting Engine handles objects. This flaw can lead to remote code execution. The high EPSS score of 0.33411 and its inclusion in CISA's KEV catalog indicate a significant likelihood of exploitation and confirmed real-world attacks.
This vulnerability is being actively exploited in the wild and is listed in CISA's KEV catalog, confirming its active use by threat actors. The nature of memory corruption in a browser's scripting engine typically allows for remote exploitation.
Users should ensure that Microsoft Internet Explorer is updated to the latest available patched version. Consider using alternative, more secure web browsers if possible.
Technical Analysis
CVE-2020-0968 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2020-0968 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-0968 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1