CVE-2019-1367
Published: November 3, 2021
Official Description
Microsoft Internet Explorer contains a memory corruption vulnerability in how the scripting engine handles objects in memory. Successful exploitation allows for remote code execution in the context of the current user.
CISA KEV Advisory
Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
Microsoft Internet Explorer contains a memory corruption vulnerability in how the scripting engine handles objects in memory. Successful exploitation allows for remote code execution in the context of the current user.
Apply updates per vendor instructions.
Risk Analysis
This vulnerability in Microsoft Internet Explorer involves memory corruption in the scripting engine, which can lead to remote code execution in the context of the current user. With a high EPSS score of 0.89690 and its presence in CISA's KEV, this flaw is actively exploited and poses a significant risk.
Active exploitation of this vulnerability has been observed in the wild and it is listed in CISA's KEV, indicating confirmed real-world attacks. The flaw is remotely exploitable, likely via malicious web pages.
Users should update Microsoft Internet Explorer to the latest patched version or consider using alternative, more secure browsers. Ensure all systems receive regular security updates for web browsers.
Technical Analysis
CVE-2019-1367 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-2019-1367 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-2019-1367 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