How severe is CVE-2018-8298?

CVE-2018-8298 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-8298 being actively exploited?

Yes. CVE-2018-8298 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-03, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2018-8298?

CVE-2018-8298 affects Microsoft Chakracore. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-8298?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2018-8298 have an EU (EUVD) identifier?

Yes. CVE-2018-8298 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-5575. It is also flagged as exploited in the EUVD (since 2022-03-03).

When was CVE-2018-8298 published?

CVE-2018-8298 was published on 2018-07-11 and last updated on 2026-06-17.

CVE-2018-8298

CVE-2018-8298 is a high-severity vulnerability in Microsoft Chakracore with a CVSS 3.x base score of 7.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-03-03). The underlying weakness is classified as CWE-843.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.6
EPSS exploit prediction: 75% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-03-03)
EU (EUVD) id: EUVD-2022-5575
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-03-03)
Weakness: CWE-843
Affected product: Microsoft Chakracore
Published: 2018-07-11
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-8298?: 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.
How severe is CVE-2018-8298?: CVE-2018-8298 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-8298 being actively exploited?: Yes. CVE-2018-8298 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-03, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2018-8298?: CVE-2018-8298 affects Microsoft Chakracore. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-8298?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2018-8298 have an EU (EUVD) identifier?: Yes. CVE-2018-8298 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-5575. It is also flagged as exploited in the EUVD (since 2022-03-03).
When was CVE-2018-8298 published?: CVE-2018-8298 was published on 2018-07-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*

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