SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-4237

It allows attackers to gain privileges via a crafted app that leverages a logic error.

EXPLOIT ✓HIGH 7.8EPSS 13.5%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 13.5%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

An issue was discovered in certain Apple products. iOS before 11.4 is affected. macOS before 10.13.5 is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "libxpc" component. It allows attackers to gain privileges via a crafted app that leverages a logic error.

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
13.48% probability · 96th percentile
Public exploits
1 in Exploit-DB · verified · first 29 November 2018
CISA KEV
Not listed
Affected
apple/iphone os · apple/mac os x · apple/tvos · apple/watchos
Source
product-security@apple.com
EPSS trend
0%18%35%21 September 2026: 33.76%22 September 2026: 13.75%27 October 2026: 13.48%21 September 202627 October 2026

EPSS moved from 33.8% on 21 September 2026 to 13.5% 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-45916source ↗Mac OS X - libxpc MITM Privilege Escalation (Metasploit)macos · Metasploitlocal29 November 2018yes

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