CVE-2026-86870CWE-122

CVE-2026-86870

Medium · published September 15, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
38.2
In the wild
Unconfirmed
What it is

A heap buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27, watchOS 27. Processing a maliciously crafted file may lead to unexpected app termination.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00451 · 38.2th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-09-15T01:17Z
Affected products (5)
ProductVersionsFixed in
apple/ipados< 26.726.7
apple/iphone_os< 26.726.7
apple/macos< 27.027.0
apple/visionos< 27.027.0
apple/watchos< 27.027.0
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/149037 · [email protected]https://support.apple.com/en-us/149038 · [email protected]https://support.apple.com/en-us/149041 · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 14 SEP 20:50Z
    A heap buffer overflow was addressed with improved bounds checking
    cvelistv5