CVE-2024-23459

System file overwrite via link following

Published May 2, 2024 · Updated Aug 1, 2024

Improper link resolution in Zscaler Client Connector before 3.7 allows local users to overwrite a system file on macOS. Zscaler has not disclosed the affected component or how it resolves an attacker-controlled link before accessing the destination. A low-privilege local account is required, and successful exploitation can corrupt a system file and interrupt system availability.

CVSS severity7.1
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper link resolution in Zscaler Client Connector before 3.7 allows local users to overwrite a system file on macOS. Zscaler has not disclosed the affected component or how it resolves an attacker-controlled link before accessing the destination. A low-privilege local account is required, and successful exploitation can corrupt a system file and interrupt system availability.

The record

CVE
CVE-2024-23459
Published
May 2, 2024
Updated
Aug 1, 2024
Vendor
Zscaler
Product
Zscaler Client Connector
Classifications
CWE-59
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Zscaler · Zscaler Client Connectorversion=0 <3.7

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.1Zscaler, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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