Incorrect signature validation of package

published 2024-08-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-20958

cvss: 6.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits: 0; none known

The Zscaler Updater process does not validate the digital signature of the installer before execution, allowing arbitrary code to be locally executed. This affects Zscaler Client Connector on MacOS <4.2.

Patch / fix

fixed in 2

Zscaler Client Connector 4.2
zscaler client_connector 4.2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-08-06)

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.4	CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Zscaler Client Connector
zscaler client_connector

Classification

Weakness

CWE-347 Improper Verification of Cryptographic Signature

References

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

Sources

CVE List CVE-2024-23460
NVD CVE-2024-23460

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary