CVE-2026-43815

Undergoing Analysis Undergoing Analysis - In Progress

Buffer Overflow in macOS AFPFS Kernel

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Apple Inc.

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-14

Last Modified

2026-09-14

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-03

NVD

CVE-2026-43815

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos_sequoia	15.7.8
apple	macos_sonoma	14.8.8
apple	macos_tahoe	26.6

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is a buffer overflow issue caused by insufficient bounds checking. It allows a malicious AFP file server to corrupt kernel memory when a user connects to it.

Detection Guidance

This vulnerability involves a buffer overflow in AFPFS when connecting to a malicious server. Detection requires checking for unusual network connections or kernel crashes. Monitor for unexpected afpfs-related processes or system instability after network activity. No specific commands are provided in the context.

Impact Analysis

If exploited, this vulnerability could lead to system crashes, arbitrary code execution, or unauthorized access to sensitive data on affected macOS systems.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with standards like GDPR or HIPAA. The vulnerability involves a buffer overflow leading to potential kernel memory corruption when connecting to a malicious AFPFS server, which could result in unauthorized access or system compromise. Such issues may indirectly affect compliance by compromising data integrity or confidentiality, but no explicit details are provided.

Mitigation Strategies

Update your macOS to the latest patched versions: Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6 to address the buffer overflow issue.

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