CVE-2016-1751

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-03-24 · updated 2026-06-17
Weakness: CWE-264

Description

The kernel in Apple iOS before 9.3, tvOS before 9.2, and watchOS before 2.2 does not properly restrict the execute permission, which allows attackers to bypass a code-signing protection mechanism via a crafted app.

Affected products

Apple Iphone Os: before 9.3 — fixed in 9.3
Apple tvOS: before 9.2 — fixed in 9.2
Apple watchOS: before 2.2 — fixed in 2.2

How to fix

Upgrade to a fixed version: Apple Iphone Os 9.3; Apple tvOS 9.2; Apple watchOS 2.2. Check the vendor advisory for mitigations.

References

http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
http://www.securitytracker.com/id/1035353
https://support.apple.com/HT206166
https://support.apple.com/HT206168
https://support.apple.com/HT206169
http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
http://www.securitytracker.com/id/1035353
https://support.apple.com/HT206166

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