CVE-2023-28793 | BDVDB-2026-214816 Detail

ZscalerClient Connector

Description#

Buffer overflow vulnerability in the signelf library used by Zscaler Client Connector on Linux allows Code Injection. This issue affects Zscaler Client Connector for Linux: before 1.3.1.6.

Impact#

CAPEC-100 Overflow Buffers

Weaknesses#

CWE-94 Improper Control of Generation of Code ('Code Injection')

References#

https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=Linux&applicable_version=1.3.1&deployment_date=2022-09-19

Exploit#

No public exploit known

History#

Version 12023-10-23Record published in the CVE List.
Version 22025-02-27Most recent update recorded in the CVE List.

Published

Published: 2023-10-23
Last modified: 2025-02-27

Vendor information

Vendor: Zscaler
Product: Client Connector

All Zscaler vulnerabilities

Score

7.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 23.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Code Injection

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 1.3.1.6
Fixed
1.3.1.6

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).