SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-4087

It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

EXPLOIT ✓HIGH 7.8EPSS 7.08%

Does this matter?

A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 7.1%. 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 11.2.5 is affected. tvOS before 11.2.5 is affected. watchOS before 4.2.2 is affected. The issue involves the "Core Bluetooth" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

CVSS 3.0
7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
7.08% probability · 94th percentile
Public exploits
1 in Exploit-DB · verified · first 28 February 2018
CISA KEV
Not listed
Weakness
CWE-119
Affected
apple/apple tv · apple/iphone os · apple/watchos
Source
product-security@apple.com
EPSS trend
0%8%15%21 September 2026: 10.57%22 September 2026: 7.08%27 October 2026: 7.08%21 September 202627 October 2026

EPSS moved from 10.6% on 21 September 2026 to 7.1% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

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-44215source ↗Apple iOS 11.2.5 / watchOS 4.2.2 / tvOS 11.2.5 - 'bluetoothd' Memory Corruptionmultiple · Zimperium zLabs Teamdos28 February 2018yes

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