CVE-2019-1367: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

Vulnerability summary

CVE-2019-1367 is a high (CVSS 7.6) Out-of-bounds Write vulnerability in Microsoft Internet Explorer. It is known to be exploited: CISA lists it, first on 03-11-2021. It has been used in ransomware campaigns. EPSS estimates a 52.45% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities.

Timeline

1. 23-09-2019
   PublishedVulnerability first disclosed.
2. 03-11-2021
   Added to CISA KEVMicrosoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
3. 03-05-2022
   CISA remediation dueApply updates per vendor instructions.
4. 21-10-2025
   Last modifiedVulnerability information updated.

Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2019-1221.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.