CVE-2018-0856 in the critical feed json
ChakraCore RCE Vulnerability
published 2018-02-15 8 y ago modified 2026-06-17 4 mo ago also GHSA-399v-jg88-3gx6 , EUVD-2022-2148
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 15.4%
- EPSS 15.4% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
Summary
Microsoft Edge and ChakraCore in Microsoft Windows 10 1703 and 1709 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0840, CVE-2018-0857, CVE-2018-0858, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.
Patch / fix
- nuget Microsoft.ChakraCore 1.8.1
Exploit prediction
15.43% 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 | <1.8.1 |
1.8.1 |
Affected products
- Microsoft Corporation Microsoft Edge, ChakraCore
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-0856
web, patch, vendor-advisory
-
github.com
/chakra-core/ChakraCore/commit/385af842bce4f94ddef98553a81f8ea99c7e2dcf
web
-
securityfocus.com
/bid/102880
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1040372
vdb-entry, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-0856
advisory
-
github.com
/chakra-core/ChakraCore
package
-
web.archive.org
/web/20210125205300/http://www.securityfocus.com/bid/102880
web
-
web.archive.org
/web/20211208072939/http://www.securitytracker.com/id/1040372
web
Sources
- CVE List CVE-2018-0856
- GitHub Advisory GHSA-399v-jg88-3gx6
- NVD CVE-2018-0856
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.