CVE-2018-8291

Q: How do I fix CVE-2018-8291?

Upgrade chakracore to 1.10.1 or later.

Q: Is CVE-2018-8291 being actively exploited?

Not that we know of. CVE-2018-8291 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 62.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 99% of all scored CVEs.

Q: How severe is CVE-2018-8291?

CVE-2018-8291 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2018-8291 affect?

Published advisories record a fix for chakracore (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHEPSS 99th pctl

7.5

CVSS v3

NVD

Description

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge. This CVE ID is unique from CVE-2018-8242, CVE-2018-8283, CVE-2018-8287, CVE-2018-8288, CVE-2018-8296, CVE-2018-8298.

CWE-843Type Confusion

How to fix

Remediation Available

chakracoreNVD

Affected:< 1.10.1Fixed in:1.10.1CVE-2018-8291derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

62.87%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Patch1

portal.msrc.microsoft.com

Exploit1

exploit-db.com

Third-Party Advisory3

Related Vulnerabilities

Other CWE-843 (Type Confusion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-0611	High	8.8	99%	KEV	Fix
CVE-2012-0507	Critical	9.8	98%	KEV + Ransom	-
CVE-2017-8291	High	7.8	97%	KEV	Fix
CVE-2021-21224	High	8.8	84%	KEV	Fix
CVE-2019-0752	High	7.5	82%	KEV + Ransom	-
CVE-2017-0037	High	8.1	80%	KEV	-

Common questions

How do I fix CVE-2018-8291?

Upgrade chakracore to 1.10.1 or later.

Is CVE-2018-8291 being actively exploited?

Not that we know of. CVE-2018-8291 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 62.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 99% of all scored CVEs.

How severe is CVE-2018-8291?

CVE-2018-8291 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2018-8291 affect?

Published advisories record a fix for chakracore (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.