Cyber Resilience

CVE-2023-28797

Zscaler Client Connector ≤ 4.1

Published
23 October 2023
Modified
21 November 2024
CVSS Score v3.1 6.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L
EPSS Score 0.0022 12th percentile
Risk Priority 42 floored blend · peak EPSS

Summary

CVE-2023-28797 is a medium-severity Link Following (CWE-59) vulnerability in Zscaler Client Connector. Its CVSS base score is 6.3 (Medium).

Operationally, ranked at the 12th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

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.

CWE(s)
CWE-59

Related Threats

CVEs Like This One

CVE-2024-23459Same product: Zscaler Client Connector
CVE-2023-41971Same product: Zscaler Client Connector
CVE-2023-41972Same product: Zscaler Client Connector
CVE-2024-23460Same product: Zscaler Client Connector
CVE-2024-23482Same product: Zscaler Client Connector
CVE-2024-23461Same product: Zscaler Client Connector
CVE-2026-22569Same product: Zscaler Client Connector
CVE-2023-28806Same product: Zscaler Client Connector
CVE-2023-28799Same product: Zscaler Client Connector
CVE-2023-28793Same product: Zscaler Client Connector

Affected Assets

zscaler
client connector
≤ 4.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V15.4.2

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require code to validate paths and avoid unsafe link following.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
detects

Security testing can detect link-following flaws before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC practices can mandate link-resolution checks and canonicalization before file access.

A.8.26 Application security requirements partial match
prevents

Application security requirements can explicitly require safe handling of symbolic links and path traversal.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles include input validation and safe file-access design patterns.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly address canonicalization and symlink attacks during implementation.

A.8.3 Information access restriction none match
none

Access-control rules can limit which files are reachable, reducing exposure to malicious links.

References