How severe is CVE-2018-8384?

CVE-2018-8384 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-2018-8384 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 62% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-8384?

CVE-2018-8384 affects Microsoft Chakracore. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-8384?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-8384 published?

CVE-2018-8384 was published on 2018-08-15 and last updated on 2026-06-17.

CVE-2018-8384

CVE-2018-8384 is a high-severity vulnerability in Microsoft Chakracore with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 62% places it in the 99th percentile, indicating an elevated likelihood of exploitation. 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: 62% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-843
Affected product: Microsoft Chakracore
Published: 2018-08-15
Last modified: 2026-06-17

Description

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-8266, CVE-2018-8380, CVE-2018-8381.

Frequently asked questions

What is CVE-2018-8384?: A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-8266, CVE-2018-8380, CVE-2018-8381.
How severe is CVE-2018-8384?: CVE-2018-8384 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-2018-8384 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 62% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-8384?: CVE-2018-8384 affects Microsoft Chakracore. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-8384?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-8384 published?: CVE-2018-8384 was published on 2018-08-15 and last updated on 2026-06-17.

References

Affected products (1)

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

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