TI-2023-13307 Aliases CVE-2023-28797 GHSA-fgvx-4256-89cx

LPE using arbitrary file delete with Symlinks

LOW 33CWE-59Published 2023-10-23 · Updated 2025-02-27

Key facts

Attack vector: Local
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Zscaler Client Connector for Windows before 4.1 writes/deletes a configuration file inside specific folders on the disk. A malicious user can replace the folder and execute code as a privileged user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00228 13th percentileScored 2026-11-07

Fix Fixed Client Connector (Zscaler): 4.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Zscaler	Client Connector	before 4.1	4.1	Patch available	CNA

Client Connector VendorZscaler Affected before 4.1 Fixed in 4.1 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:zscaler:client_connector::::::windows::*	before 4.1	Vulnerable	Zscaler

cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:windows:*:* Versions before 4.1 Vulnerable ·Zscaler

Remediation

Fix · CNA Client Connector (Zscaler) Fixed in 4.1

Timeline

2026-10-02 Threatist record created from CVE-2023-28797
2026-10-03 Alias added: GHSA-fgvx-4256-89cx

References

Other 1

https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022

TI-2020-09334 The Zscaler Client Connector for Windows prior to 2.1.2.74 had a stack based buffer… CVSS 3.1CRITICAL 9.8
TI-2024-15528 Local Privilege Escalation via lack of input validation CVSS 3.1CRITICAL 9.8
TI-2024-15526 Insecure MacOS code sign check fallback CVSS 3.1CRITICAL 9.8
TI-2024-15505 Multiple Arbitrary Creates/Overwrites by link following CVSS 3.1CRITICAL 9.8
TI-2023-13308 Out-of-bounds write to heap in pacparser CVSS 3.1CRITICAL 9.8
TI-2023-13315 ZCC on Linux privilege escalation CVSS 3.1CRITICAL 9.8

See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences