Is CVE-2016-4718 in the CISA KEV catalog?

No. CVE-2016-4718 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-4718?

CVE-2016-4718 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2016-4718?

CVE-2016-4718 has an EPSS score of 2.57% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-4718?

Upgrade iphone os to 10.0 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2016-4718

MEDIUMEPSS 83th pctl

6.5

CVSS v3

NVD

Description

Buffer overflow in FontParser in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows remote attackers to obtain sensitive information from process memory via a crafted font file.

CWE-119Buffer Overflow

How to fix

Remediation Available

iphone osNVD

Affected:< 10.0Fixed in:10.0CVE-2016-4718derived from NVD

mac os xNVD

Affected:< 10.12.0Fixed in:10.12.0CVE-2016-4718derived from NVD

tvosNVD

Affected:< 10.0Fixed in:10.0CVE-2016-4718derived from NVD

watchosNVD

Affected:< 3.0Fixed in:3.0CVE-2016-4718derived from NVD

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

2.57%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Vendor Advisory8

Third-Party Advisory2

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 2026-05-06.