CVE-2026-43815CWE-787

CVE-2026-43815

High · published September 15, 2026

CVSS v3.1

8.8

EPSS

Percentile

40.4

In the wild

Unconfirmed

What it is

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Connecting to a malicious afpfs server may lead to kernel memory corruption.

The record

Technical detail

CVSS v3.1: 8.8 · HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0: Not supplied
EPSS: 0.00479 · 40.4th percentile
Weakness: CWE-787 · Out-of-bounds Write
Published: 2026-09-15T01:17Z

Affected products (3)

Product	Versions	Fixed in
apple/macos	≥ 14.0, < 14.8.8	14.8.8
apple/macos	≥ 15.0, < 15.7.8	15.7.8
apple/macos	≥ 26.0, < 26.6	26.6

References (3)

https://support.apple.com/en-us/128067 · [email protected]https://support.apple.com/en-us/128071 · [email protected]https://support.apple.com/en-us/128072 · [email protected]

EPSS history

Timeline

16 SEP 04:27Z
EPSS moved — → 0%
epss
14 SEP 20:50Z
A buffer overflow was addressed with improved bounds checking
cvelistv5