CVE-2023-28805

Local privilege escalation via OS command injection

Published Oct 23, 2023 · Updated Feb 27, 2025

OS command injection in Zscaler Client Connector before 1.4.0.105 on Linux allows local users to escalate privileges. Zscaler has not published the affected component, input path, or command-building operation that fails to neutralize attacker-controlled data. Local execution is required; successful exploitation permits reading protected data and limited modification of system state without interrupting service.

CVSS severity6.7
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Zscaler Client Connector before 1.4.0.105 on Linux allows local users to escalate privileges. Zscaler has not published the affected component, input path, or command-building operation that fails to neutralize attacker-controlled data. Local execution is required; successful exploitation permits reading protected data and limited modification of system state without interrupting service.

The record

CVE
CVE-2023-28805
Published
Oct 23, 2023
Updated
Feb 27, 2025
Vendor
Zscaler
Product
Zscaler Client Connector
Classifications
CWE-78, CAPEC-233, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <1.4.0.105

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Zscaler · Zscaler Client Connectorversion=0 <1.4.0.105

Published CVSS scores

6.7Zscaler, Inc.CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-233Privilege Escalation
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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