Is CVE-2018-5126 in the CISA KEV catalog?

No. CVE-2018-5126 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-5126?

CVE-2018-5126 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-5126?

CVE-2018-5126 has an EPSS score of 1.77% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-5126?

Upgrade firefox on debian unstable to 59.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2018-5126

CRITICALEPSS 75th pctl

9.8

CVSS v3

NVD

Description

Memory safety bugs were reported in Firefox 58. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 59.

CWE-119Buffer Overflow

How to fix

Remediation Available

firefoxDebian

Fixed in:59.0-1CVE-2018-5126

firefoxUbuntu

Fixed in:59.0+build5-0ubuntu0.14.04.1USN-3596-1

Fixed in:59.0+build5-0ubuntu0.16.04.1USN-3596-1

DeveloperEditionWindows application

Affected:59.0Fixed in:59.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:59.0Fixed in:59.0Mozilla

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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.77%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Third-Party Advisory4

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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.