Security Resilience

CVE-2018-8298

Memory Safety in Microsoft Chakracore ≤ 1.10.1

CISA KEVActive ExploitationEUVD ExploitedPublic PoCMemory Safety
Published
11 July 2018
Modified
28 October 2025
KEV Added
03 March 2022
Patch / advisory
View advisory
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.75 99.5th percentile
Risk Priority 82 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2018-8298 is a high-severity Type Confusion (CWE-843) vulnerability in Microsoft Chakracore. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked in the top 0.5% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, resulting in memory corruption classified under CWE-843. This affects ChakraCore and is tracked separately from multiple related issues in the same engine.

An attacker can exploit the flaw over a network with no privileges required but high attack complexity and user interaction needed, achieving high-impact effects on confidentiality, integrity, and availability.

Microsoft Security Response Center advisories reference the issue for guidance, while public exploit code is listed on Exploit-DB. The CVSS 7.5 score reflects the remote attack surface and potential for full system compromise when triggered.

EU & UK References

Vulnerability Data

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-8242, CVE-2018-8283, CVE-2018-8287, CVE-2018-8288, CVE-2018-8291, CVE-2018-8296.

CWE(s)
CWE-843
KEV Date Added
03 March 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1011.001 Exfiltration Over Bluetooth Exfiltration
Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2016-7201Same vendor: Microsoftboth on KEV
CVE-2026-21519Same vendor: Microsoftboth on KEV
CVE-2025-30397Same vendor: Microsoftboth on KEV
CVE-2017-0037Same vendor: Microsoftboth on KEV
CVE-2019-0752Same vendor: Microsoftboth on KEV
CVE-2022-41033Same vendor: Microsoftboth on KEV
CVE-2024-38178Same vendor: Microsoftboth on KEV
CVE-2023-37139Same product: Microsoft Chakracore
CVE-2024-7971Same vendor: Microsoftboth on KEV
CVE-2013-2551Same vendor: Microsoftboth on KEV

Affected Assets

microsoft
chakracore
≤ 1.10.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.5.2
  • V15.3.5

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly prevent type-confusion flaws via safe typing, static analysis, and code review while the control itself addresses many additional weaknesses.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References