CVE-2019-0539

highpriority · attend · 69EPSS 0.829 · 100 %ileexploit · functionalEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

4 exploits · functional

Likely / severe?

82.9% (100th) EPSS

CVSS 7.6 · high

Is it mine?

23 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-26

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.6

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.2–7.6

v2.07.6highAV:N/AC:H/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 4.9 · impact 10

v3.07.5highCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.6 · impact 5.9

v3.07.5highCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · OSV

v3.07.5highCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.14.2mediumAV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119USCWE-787US

exploits (4)

Public proof-of-concept and weaponised exploit code.

EDB-46203Microsoft Edge Chakra - 'NewScObjectNoCtor' or 'InitProto' Type Confusionfunctional · exploit_db
EDB-46204Microsoft Edge Chakra - 'InitClass' Type Confusionfunctional · exploit_db
EDB-46485Microsoft Edge Chakra 1.11.4 - Read Permission via Type ConfusionPoC · exploit_db
0x43434343/CVE-2019-0539R/W PoC · poc_in_github

affected products (23)

Products and version ranges known to be affected.

Microsoft ChakraCore≤ ChakraCoreenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1803 for x64-based Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows Server 2019enisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1703 for x64-based Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1607 for 32-bit Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1809 for 32-bit Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1709 for 32-bit Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1703 for 32-bit Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 for 32-bit Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1709 for ARM64-based Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1607 for x64-based Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1709 for x64-based Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows Server 2016enisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1809 for ARM64-based Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 for x64-based Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1803 for 32-bit Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1803 for ARM64-based Systemsenisa_euvdEU
Microsoft Microsoft Edge≤ Windows 10 Version 1809 for x64-based Systemsenisa_euvdEU
Microsoft Corp ChakraCore≤ 1.11.5fstec_bduRU
Microsoft Corp Microsoft Edgeall versionsfstec_bduRU

showing 20 of 23

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-3w4v-qfqc-3433ChakraCore RCE Vulnerability2022-05-13ghsa · osvUS
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.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv NVD CVE.org MITRE

published 2019-01-08modified 2026-06-17

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Related entries.

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+16091 more

references (19)

External citations — patches, advisories, analysis.

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