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Fencer Vulns
high 7.5

CVE-2019-0539 in the critical feed json

ChakraCore RCE Vulnerability

published 2019-01-08 7 y ago modified 2026-06-17 4 mo ago also GHSA-3w4v-qfqc-3433 , EUVD-2022-2251

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
82.9%
EPSS 82.9% chance of exploitation in 30 days, percentile 99.6%
public exploits
3
Exploit-DB

Summary

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2019-0567, CVE-2019-0568.

Patch / fix

  • nuget Microsoft.ChakraCore 1.11.5

Timeline

  1. Published
  2. First public exploit (EDB-46204)

Exploit prediction

82.90% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-46485 Microsoft Edge Chakra 1.11.4 - Read Permission via Type Confusion dos, 2019-03-04
  • EDB-46204 Microsoft Edge Chakra - 'InitClass' Type Confusion dos, 2019-01-18
  • EDB-46203 Microsoft Edge Chakra - 'NewScObjectNoCtor' or 'InitProto' Type Confusion dos, 2019-01-18

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/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
GitHub 3.0 7.5 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
nuget Microsoft.ChakraCore
<1.11.5
1.11.5

Affected products

  • Microsoft Microsoft Edge
  • Microsoft ChakraCore

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.