Is CVE-2023-28805 actively exploited?

No active exploitation of CVE-2023-28805 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-28805 be exploited remotely?

Yes. CVE-2023-28805 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-28805?

CVE-2023-28805 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-28805

CWE-78Published: October 23, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation. This issue affects Client Connector: before 1.4.0.105

NVD Source

Risk Analysis

An improper input validation vulnerability in Zscaler Client Connector for Linux allows for privilege escalation. This critical flaw allows an attacker to gain elevated privileges, resulting in a 9.8 CVSS score.

No public exploit is known, and it is not in the KEV. The vulnerability is remotely exploitable.

Recommended Action

Upgrade Zscaler Client Connector to version 1.4.0.105 or later. Ensure all client software is kept up to date.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-28805 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.