CVE-2024-23458

Local privilege escalation via unchecked reparse points

Published Aug 6, 2024 · Updated Aug 6, 2024

Local privilege escalation in Zscaler Client Connector for Windows before 4.2.0.190 allows local users to gain elevated privileges. The autoupdater copies individual log files without checking whether a source path is a Windows reparse point, allowing a crafted link to redirect a privileged file operation. Exploitation requires low-privileged local access and control of the relevant log-file path; the published record does not identify the resulting privilege level.

CVSS severity7.8
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in Zscaler Client Connector for Windows before 4.2.0.190 allows local users to gain elevated privileges. The autoupdater copies individual log files without checking whether a source path is a Windows reparse point, allowing a crafted link to redirect a privileged file operation. Exploitation requires low-privileged local access and control of the relevant log-file path; the published record does not identify the resulting privilege level.

The record

CVE
CVE-2024-23458
Published
Aug 6, 2024
Updated
Aug 6, 2024
Vendor
Zscaler
Product
Zscaler Client Connector
Classifications
CWE-346, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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 <4.2.0.190

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Zscaler · Zscaler Client Connectorversion=0 <4.2.0.190

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3ZscalerCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

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-346Origin Validation Error
T1068Exploitation for Privilege Escalation

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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