SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2019-6209

An out-of-bounds read issue existed that led to the disclosure of kernel memory.

EXPLOIT ✓MEDIUM 5.5EPSS 3.69%

Does this matter?

A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 3.7%. Treat it as high on anything reachable from the internet.

Description

An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in iOS 12.1.3, macOS Mojave 10.14.3, tvOS 12.1.2, watchOS 5.1.3. A malicious application may be able to determine kernel memory layout.

CVSS 3.0
5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
3.69% probability · 90th percentile
Public exploits
1 in Exploit-DB · verified · first 30 January 2019
CISA KEV
Not listed
Weakness
CWE-125
Affected
apple/iphone os · apple/mac os x · apple/tv os · apple/watchos
Source
product-security@apple.com
EPSS trend
0%5%10%21 September 2026: 5.71%22 September 2026: 3.69%26 October 2026: 3.69%21 September 202626 October 2026

EPSS moved from 5.7% on 21 September 2026 to 3.7% on 26 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-46285source ↗iOS/macOS 10.13.6 - 'if_ports_used_update_wakeuuid()' 16-byte Uninitialized Kernel Stack Disclosuremultiple · Google Security Researchdos30 January 2019yes

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