CVE-2018-8503 in the critical feed json
ChakraCore RCE Vulnerability
published 2018-10-10 8 y ago modified 2026-06-17 4 mo ago also GHSA-2589-r26x-mh8p , EUVD-2022-1907
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 14.2%
- EPSS 14.2% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
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-2018-8505, CVE-2018-8510, CVE-2018-8511, CVE-2018-8513.
Patch / fix
- nuget Microsoft.ChakraCore 1.11.2
Exploit prediction
14.23% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
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 | <1.11.2 |
1.11.2 |
Affected products
- Microsoft Microsoft Edge
- Microsoft ChakraCore
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8503
web, patch, vendor-advisory
-
github.com
/chakra-core/ChakraCore/pull/5764
web
-
github.com
/chakra-core/ChakraCore/commit/062b4d9f42723ce7c2725f844cbf5431d52ca999
web
-
securitytracker.com
/id/1041825
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/105464
vdb-entry, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-8503
advisory
-
github.com
/chakra-core/ChakraCore
package
-
web.archive.org
/web/20210729123415/http://www.securityfocus.com/bid/105464
web
-
web.archive.org
/web/20210927074321/http://www.securitytracker.com/id/1041825
web
Sources
- CVE List CVE-2018-8503
- GitHub Advisory GHSA-2589-r26x-mh8p
- NVD CVE-2018-8503
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.