CVE-2024-23480: Insecure MacOS code sign check fallback

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-01 · updated 2026-06-17
Weakness: CWE-347

Description

A fallback mechanism in code sign checking on macOS may allow arbitrary code execution. This issue affects Zscaler Client Connector on MacOS prior to 4.2.

Affected products

Zscaler Client Connector: before 4.2 — fixed in 4.2

How to fix

Upgrade to a fixed version: Zscaler Client Connector 4.2. Check the vendor advisory for mitigations.

References

https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=macos&applicable_version=4.2
https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=macos&applicable_version=4.2

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