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Fencer Vulns
high 7.5

CVE-2019-1367 kev+ ransomware in the critical feed json

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scri…

published 2019-09-23 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-9924

cvss
7.5
version 3.1, CNA
cisa kev
Exploited
added 2021-11-03, used in ransomware
epss
52.4%
EPSS 52.4% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

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.

Patch / fix

cisa required action Apply updates per vendor instructions.

Timeline

  1. 0-day patched (Project Zero)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
5 y ago
Patch by
2022-05-03 (4 y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply updates per vendor instructions.
Vendor, product
Microsoft, Internet Explorer
CISA name
Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2019-09-23
Details
project zero root cause analysis

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
21 mo ago

Exploit prediction

52.45% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 7.6 AV:N/AC:H/Au:N/C:C/I:C/A:C

Affected products

  • 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

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.