CVE-2018-8279
HighPublic exploitA remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore.
Published Jul 10, 2018 · Updated Aug 27, 2026
Key Facts
Patch immediately- CVE-2018-8279 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting ChakraCore (Microsoft), Edge (Microsoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 71% probability of exploitation in the next 30 days.
- Fixed versions are available, including ChakraCore <=1.10.0, ChakraCore 1.10.0.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
7.5
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
71%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8125, CVE-2018-8262, CVE-2018-8274, CVE-2018-8275, CVE-2018-8301.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ChakraCoreMicrosoft | >= ChakraCore | 1.10.0 |
| EdgeMicrosoft | >= Windows 10 Version 1703 for 32-bit Systems | n/a |
Patched Releases
ChakraCore
<=1.10.0
Timeline
Publicly disclosed
Jul 10, 2018
Last updated
Aug 27, 2026
Weakness Type
- CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
References
- advisory104641
- advisory1041256
- patchhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8279
- exploitExploitDB-45214
- exploit45214
FAQ
Common Questions.
A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore.
Affected: ChakraCore (Microsoft) versions >= ChakraCore; Edge (Microsoft) versions >= Windows 10 Version 1703 for 32-bit Systems. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including ChakraCore <=1.10.0, ChakraCore 1.10.0.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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