CVE-2023-28805
ZCC on Linux privilege escalation
An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation. This issue affects Client Connector: before 1.4.0.105
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
ZCC on Linux privilege escalation
An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation. This issue affects Client Connector: before 1.4.0.105
- Record
CVE-2023-28805- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N - Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2023-32440
An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation. This issue affects Client Connector: before 1.4.0.105
- Record
EUVD-2023-32440- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-5f5r-qwxj-xhxq
An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege...
An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation. This issue affects Client Connector: before 1.4.0.105
- Record
GHSA-5f5r-qwxj-xhxq- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N - Weakness
- CWE-20, CWE-78
- Updated
- 2026-11-02
NVD
An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation. This issue affects Client Connector: before 1.4.0.105
- Record
CVE-2023-28805- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-28805 is a medium vulnerability (CVSS 6.7) in Zscaler Client Connector, published October 23, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. No source names a fixed version.