CVE-2019-1367
Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
- High 7.5
- Exploited: added to CISA KEV 3 Nov 2021
- Used in ransomware campaigns
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.
Key facts
- Published
- 23 Sep 2019
- Last changed
- 21 Oct 2025
- Assigned by
- microsoft
- KEV added
- 3 Nov 2021
- KEV fix due
- 3 May 2022
- Used in ransomware
- Yes, according to CISA
- EPSS
- 52.449% likely to be exploited in the next 30 days, higher than 98.983% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.5CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Internet Explorer 9 |
|
| Microsoft | Internet Explorer 11 |
|
| Microsoft | Internet Explorer 11 on Windows Server 2012 |
|
| Microsoft | Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems |
|
| Microsoft | Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems |
|
| Microsoft | Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems |
|
| Microsoft | Internet Explorer 10 |
|
Timeline
- 23 Sep 2019 Published
- 3 Nov 2021 CVE-2019-1367 added to CISA KEV
- 3 Nov 2021 Added to the CISA KEV catalogue