CVE-2026-86918CWE-787

CVE-2026-86918

Medium · published October 20, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
11.6
In the wild
Unconfirmed
What it is

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. Processing a maliciously crafted image may lead to unexpected app termination.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00218 · 11.6th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-10-20T05:17Z
References (5)
https://support.apple.com/en-us/149034 · [email protected]https://support.apple.com/en-us/149035 · [email protected]https://support.apple.com/en-us/149036 · [email protected]https://support.apple.com/en-us/149037 · [email protected]https://support.apple.com/en-us/149038 · [email protected]
EPSS history
Timeline
  • 21 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 20 OCT 00:50Z
    An out-of-bounds write issue was addressed with improved bounds checking
    cvelistv5
  • 20 OCT 00:50Z
    An out-of-bounds write issue was addressed with improved bounds checking
    cvelistv5