SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-4243

A buffer overflow in getvolattrlist allows attackers to execute arbitrary code in a privileged context via a crafted app.

EXPLOIT ✓HIGH 7.8EPSS 18.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 18.2%, higher than 97% 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 "Kernel" component. A buffer overflow in getvolattrlist allows attackers to execute arbitrary code in a privileged context 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
18.19% probability · 97th percentile
Public exploits
1 in Exploit-DB · verified · first 6 June 2018
CISA KEV
Not listed
Weakness
CWE-119
Affected
apple/apple tv · apple/iphone os · apple/mac os x · apple/watchos
Source
product-security@apple.com
EPSS trend
0%15%30%21 September 2026: 25.86%22 September 2026: 18.54%27 October 2026: 18.19%21 September 202627 October 2026

EPSS moved from 25.9% on 21 September 2026 to 18.2% 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-44848source ↗Apple macOS/iOS Kernel - Heap Overflow Due to Lack of Lower Size Check in getvolattrlistmultiple · Google Security Researchdos6 June 2018yes

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