VulnerabilityModified
CVE-2018-4434
An out-of-bounds read was addressed with improved input validation.
HIGH 7.1EPSS 0.31%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An out-of-bounds read was addressed with improved input validation. This issue affected versions prior to macOS Mojave 10.14.2.
- CVSS 3.0
- 7.1 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.31% probability · 24th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- apple/mac os x
- Source
- product-security@apple.com
EPSS 0.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://support.apple.com/kb/HT209341Vendor Advisory
- https://support.apple.com/kb/HT209341Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.