CVE-2019-1367
HighExploitedPublic exploitA 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'.
Published Sep 23, 2019 · Updated Oct 29, 2025
Key Facts
Patch immediately- CVE-2019-1367 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Internet Explorer (Microsoft), Internet Explorer 10, Internet Explorer 11 and 5 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 23, 2019 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 52% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
52%
Higher than 98.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2019-1367 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 3, 2021 | May 3, 2022 | Known |
| Industry KEV feed | Sep 23, 2019 | May 3, 2022 | Known |
| CIRCL KEV | Nov 3, 2021 | May 3, 2022 | Known |
| ENISA EUVD | Nov 3, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
10 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Internet ExplorerMicrosoft | 10, 11, 9 | n/a |
| Internet Explorer 10 | >= Windows Server 2012 | n/a |
| Internet Explorer 11 | >= Windows 7 for 32-bit Systems Service Pack 1 | n/a |
| Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems | >= unspecified | n/a |
| Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems | >= unspecified | n/a |
Timeline
Publicly disclosed
Sep 23, 2019
Added to Industry KEV feed
Sep 23, 2019
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Oct 29, 2025
Weakness Type
- CWE-787 Out-of-bounds Write
References
- patchhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1367
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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'.
Affected: Internet Explorer (Microsoft) versions 10, 11, 9; Internet Explorer 10 versions >= Windows Server 2012; Internet Explorer 11 versions >= Windows 7 for 32-bit Systems Service Pack 1, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 23, 2019 and is known to be used in ransomware campaigns.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of May 3, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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