CVE-2022-26723

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-05-26 · updated 2026-06-17
Weakness: CWE-787

Description

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Monterey 12.4, macOS Big Sur 11.6.6. Mounting a maliciously crafted Samba network share may lead to arbitrary code execution.

Affected products

Apple macOS: from 11.0 before 11.6.6; from 12.0 before 12.4 — fixed in 11.6.6, 12.4

How to fix

Upgrade to a fixed version: Apple macOS 11.6.6, 12.4. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/HT213256
https://support.apple.com/en-us/HT213257
https://support.apple.com/en-us/HT213256
https://support.apple.com/en-us/HT213257

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