CVE-2024-23456: Anti-tampering can be disabled under certain conditions without signature validation

Q: How do I fix CVE-2024-23456?

client connector: upgrade to 4.2.0.190. Exact commands for each OS are on this page.

Q: Is CVE-2024-23456 being exploited?

CVE-2024-23456 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-23456 affect?

CVE-2024-23456 affects client connector. Severity is high (CVSS 7.8). Anti-tampering can be disabled under certain conditions without signature validation. This affects Zscaler Client Connector <4.2.0.190 with anti-tampering enabled.

Routine

HIGH 7.8UPGRADE

CVE-2024-23456 is a high-severity flaw (CVSS 7.8) affecting client connector. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Anti-tampering can be disabled under certain conditions without signature validation. This affects Zscaler Client Connector <4.2.0.190 with anti-tampering enabled.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-347
Published	2024-08-06
Last modified	2026-06-17

Publisher (CNA): Zscaler, Inc. · Vendor: zscaler

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-08-06 16:15 UTCPublished CVE record published
2026-06-17 07:12 UTCUpdated Record last modified

zscaler client connector UPGRADE

Affected: < 4.2.0.190

Fixed in: 4.2.0.190

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy client-connector || rpm -q client-connector || client-connector --version

2. UPGRADE to 4.2.0.190 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade client-connector

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade client-connector

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-23456?

client connector: upgrade to 4.2.0.190. Exact commands for each OS are on this page.

Is CVE-2024-23456 being exploited?

CVE-2024-23456 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-23456 affect?

CVE-2024-23456 affects client connector. Severity is high (CVSS 7.8). Anti-tampering can be disabled under certain conditions without signature validation. This affects Zscaler Client Connector <4.2.0.190 with anti-tampering enabled.

How urgent is CVE-2024-23456?

Priority 31/100. High severity

Related CVEs

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References

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