CVE-2016-1827

HIGH

Apple iOS <9.3.2 - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2016-1827. PoCs published by Brandon Azad, bazad.

AI-analyzed exploit summary This PoC exploits a kernel heap overflow in the `flow_divert_handle_app_map_create` function on OS X and iOS by sending a maliciously crafted message via a socket. It triggers a kernel panic on OS X Yosemite due to incorrect handling of the `prefix_count` field.

Description

The kernel in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1 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-2016-1828, CVE-2016-1829, and CVE-2016-1830.

Exploits (2)

exploitdb WORKING POC
by Brandon Azad · cdososx
https://www.exploit-db.com/exploits/44238

This PoC exploits a kernel heap overflow in the `flow_divert_handle_app_map_create` function on OS X and iOS by sending a maliciously crafted message via a socket. It triggers a kernel panic on OS X Yosemite due to incorrect handling of the `prefix_count` field.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Apple OS X (Yosemite) and iOS (pre-9.3.2)
Auth required
Prerequisites: Root privileges · Access to the target system
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 4 stars
by bazad · poc
https://github.com/bazad/flow_divert-heap-overflow

This repository contains a functional proof-of-concept exploit for CVE-2016-1827, a kernel heap overflow in the `flow_divert_handle_app_map_create` function on OS X and iOS. The exploit triggers a kernel panic on OS X Yosemite by sending a maliciously crafted message with an unchecked length field.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Apple OS X Yosemite 10.10.5 and earlier, iOS (untested)
Auth required
Prerequisites: Root privileges · Access to the target system
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (10)

Core 10
Core References
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206567
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/90691
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/May/msg00004.html
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206566
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/May/msg00003.html
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206564
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1035890
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/May/msg00002.html
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206568
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/May/msg00001.html

Scores

CVSS v3 7.8
EPSS 0.0491
EPSS Percentile 89.9%
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 < 9.3.2
apple/mac_os_x < 10.11.5
apple/tvos < 9.2.1
apple/watchos < 2.2.1
Published May 20, 2016
Tracked Since Feb 18, 2026