ZCC macOS Upgrade ZIP Bomb DoS

published 2024-05-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-20959

cvss: 4.2; 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 1%
public exploits: 0; none known

An Improper Validation of Integrity Check Value vulnerability in Zscaler Client Connector on MacOS during the upgrade process may allow a Local Execution of Code.This issue affects Client Connector on MacOS: before 3.4.

Patch / fix

fixed in 2

Zscaler Client Connector 3.4
zscaler client_connector 3.4

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-05-02)

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.2	CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Zscaler Client Connector
zscaler client_connector

Classification

Weakness

CWE-354 Improper Validation of Integrity Check Value

References

help.zscaler.com /zscaler-client-connector/client-connector-app-release-summary-2021?applicable_category=macos&applicable_versi
release-notes, vendor-advisory

Sources

CVE List CVE-2024-23461
NVD CVE-2024-23461

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