CVE-2026-43815

macOS AFPFS Buffer Overflow Leading to Kernel Memory Corruption

Published Sep 14, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title macOS AFPFS Buffer Overflow Leading to Kernel Memory Corruption
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-787
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Title AFPFS Buffer Overflow in macOS Kernel
Weaknesses CWE-119
Type Values Removed Values Added
Title AFPFS Buffer Overflow in macOS Kernel
Weaknesses CWE-119
Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description 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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Sep 18, 2026, 3:56 AM
Reserved
May 1, 2026, 10:46 PM
Status
Modified
Published
Sep 14, 2026, 9:17 PM
Modified
Sep 18, 2026, 4:17 AM