SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2016-7621

It allows local users to execute arbitrary code in a privileged context or cause a denial of service (use-after-free) via unspecified vectors.

EXPLOIT ✓HIGH 7.8EPSS 1.26%

Does this matter?

A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 1.3%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.

Description

An issue was discovered in certain Apple products. iOS before 10.2 is affected. macOS before 10.12.2 is affected. watchOS before 3.1.3 is affected. The issue involves the "Kernel" component. It allows local users to execute arbitrary code in a privileged context or cause a denial of service (use-after-free) via unspecified vectors.

CVSS 3.0
7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.26% probability · 69th percentile
Public exploits
1 in Exploit-DB · verified · first 22 December 2016
CISA KEV
Not listed
Weakness
CWE-416
Affected
apple/watchos · apple/iphone os · apple/mac os x
Source
product-security@apple.com
EPSS trend
0%3%5%27 October 2026: 1.26%27 October 202627 October 2026

EPSS 1.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-40956source ↗Apple macOS < 10.12.2 / iOS < 10.2 - '_kernelrpc_mach_port_insert_right_trap' Kernel Reference Count Leak / Use-After-Freemacos · Google Security Researchlocal22 December 2016yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.