CVE-2018-8276
ChakraCore Security Bypass
CVE-2018-8276 is a medium vulnerability (CVSS 6.5) in Microsoft Chakracore, published July 11, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.77%, the 93rd percentile. Fixed in Microsoft.ChakraCore 1.10.1.
- Severity
- 6.5 MediumCVSS 3.0, NVD
- Exploit chance
- 5.77%EPSS, 93rd percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
1.10.1Microsoft.ChakraCore +1 more
Description
A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
Microsoft.ChakraCoreNuGet | before 1.10.1 | 1.10.1 |
Microsoft.ChakraCoreNuGet | before 1.10.1, plus listed versions 1.10.01.2.01.2.11.2.21.2.3 Show 29 moreShow less1.2.6.62716-preview1.3.01.3.11.3.21.4.01.4.11.4.21.4.31.4.41.4.51.5.01.5.11.5.21.5.31.6.01.6.21.7.01.7.11.7.21.7.31.7.41.7.51.7.61.8.01.8.11.8.21.8.31.8.41.8.5 | 1.10.1 |
What each source reports
NVD Score used
A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.
- Record
CVE-2018-8276- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Updated
- 2026-11-02
CVE ListNo score
A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.
- Record
CVE-2018-8276- Updated
- 2026-11-02
EUVDEUVD-2022-5570No score
A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.
- Record
EUVD-2022-5570- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wg47-6cqc-q52j
ChakraCore Security Bypass
A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.
- Record
GHSA-wg47-6cqc-q52j- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-wg47-6cqc-q52j
ChakraCore Security Bypass
A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.
- Record
GHSA-wg47-6cqc-q52j- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
securitytracker.com/id/1041256
securityfocus.com/bid/104626
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8276
nvd.nist.gov/vuln/detail/CVE-2018-8276
github.com/chakra-core/ChakraCore/commit/4196f8097afdcc5fe01ce2966871712fb24003a3
web.archive.org/web/20210124183457/http://www.securityfocus.com/bid/104626