CVE-2016-1755

HIGH

Apple iOS <9.3 - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-1755. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit demonstrates a use-after-free vulnerability in the AppleKeyStore userclient on OS X 10.11.3 by racing two threads: one closing the userclient and another making an external method call, leading to a kernel crash or potential privilege escalation.

Description

The kernel in Apple iOS before 9.3, OS X before 10.11.4, tvOS before 9.2, and watchOS before 2.2 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app, a different vulnerability than CVE-2016-1754.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · cdososx
https://www.exploit-db.com/exploits/39614

This exploit demonstrates a use-after-free vulnerability in the AppleKeyStore userclient on OS X 10.11.3 by racing two threads: one closing the userclient and another making an external method call, leading to a kernel crash or potential privilege escalation.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Moderate
Reliability
Racy
Target: AppleKeyStore on OS X 10.11.3 El Capitan
No auth needed
Prerequisites: Access to a vulnerable macOS system (10.11.3)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (10)

Core 10
Core References
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206167
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206168
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1035353
Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/39614/
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206169
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206166

Scores

CVSS v3 7.8
EPSS 0.0452
EPSS Percentile 89.4%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (4)
apple/iphone_os < 9.3
apple/mac_os_x < 10.11.4
apple/tvos < 9.2
apple/watchos < 2.2
Published Mar 24, 2016
Tracked Since Feb 18, 2026