CVE-2019-1429
Published: November 3, 2021
Official Description
Microsoft Internet Explorer contains a memory corruption vulnerability which can allow 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 which can allow for remote code execution in the context of the current user.
Apply updates per vendor instructions.
Risk Analysis
A memory corruption vulnerability in Microsoft Internet Explorer could allow for remote code execution in the context of the current user. With an EPSS score of 0.83036, there is a high probability of this vulnerability being exploited. It is also listed in CISA's KEV, confirming active exploitation.
This vulnerability has been actively exploited in the wild. Given it's a memory corruption flaw in a browser, it is likely remotely exploitable through malicious web content.
Ensure Microsoft Internet Explorer is updated to the latest available security patches. Consider using alternative, more secure browsers if possible.
Technical Analysis
CVE-2019-1429 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-2019-1429 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-2019-1429 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