Zscaler bypass with administrative privileges on Windows

published 2024-08-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-20962

cvss: 7.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits: 0; none known

In certain cases, Zscaler Internet Access (ZIA) can be disabled by PowerShell commands with admin rights. This affects Zscaler Client Connector on Windows <4.2.1

Patch / fix

fixed in 2

Zscaler Client Connector 4.2.1
zscaler client_connector 4.2.1

CISA SSVC

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

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	4.9	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected products

Zscaler Client Connector
zscaler client_connector

Classification

Weakness

CWE-281 Improper Preservation of Permissions

References

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

Sources

CVE List CVE-2024-23464
NVD CVE-2024-23464

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