Is CVE-2016-1863 in the CISA KEV catalog?

No. CVE-2016-1863 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-1863?

CVE-2016-1863 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2016-1863?

CVE-2016-1863 has an EPSS score of 1.04% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-1863?

Upgrade iphone os to 9.3.3 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2016-1863

HIGH

7.8

CVSS v3

NVD

Description

The kernel in Apple iOS before 9.3.3, OS X before 10.11.6, tvOS before 9.2.2, and watchOS before 2.2.2 allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2016-4582 and CVE-2016-4653.

CWE-416Use After Free

How to fix

Remediation Available

iphone osNVD

Affected:< 9.3.3Fixed in:9.3.3CVE-2016-1863derived from NVD

mac os xNVD

Affected:< 10.11.6Fixed in:10.11.6CVE-2016-1863derived from NVD

tvosNVD

Affected:< 9.2.2Fixed in:9.2.2CVE-2016-1863derived from NVD

watchosNVD

Affected:< 2.2.2Fixed in:2.2.2CVE-2016-1863derived 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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.04%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Exploit1

exploit-db.com

Vendor Advisory8

Third-Party Advisory2

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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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.