CVE-2019-0539
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 82.9%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
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 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 82.90% probability · 100th percentile
- Public exploits
- 3 in Exploit-DB · verified · first 18 January 2019
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- microsoft/chakracore · microsoft/edge
- Source
- secure@microsoft.com
EPSS moved from 75.5% on 21 September 2026 to 82.9% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (3)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-46485source ↗ | Microsoft Edge Chakra 1.11.4 - Read Permission via Type Confusionwindows · Fahad Aid Alharbi | dos | 4 March 2019 | no |
| EDB-46204source ↗ | Microsoft Edge Chakra - 'InitClass' Type Confusionwindows · Google Security Research | dos | 18 January 2019 | yes |
| EDB-46203source ↗ | Microsoft Edge Chakra - 'NewScObjectNoCtor' or 'InitProto' Type Confusionwindows · Google Security Research | dos | 18 January 2019 | yes |
References
- http://www.securityfocus.com/bid/106401Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0539Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/46203/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46204/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46485/Exploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/106401Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0539Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/46203/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46204/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46485/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.