Vulnerability · Published Sep 14, 2026 · Assigned by Zscaler
CVE-2026-59569Android ZCC VPN API method privilege escalation
High 8.1
In plain English
A high-severity improper input validation in Client Connector from Zscaler. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.2%top 92.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An improper input validation vulnerability in Zscaler Client Connector on Android and ChromeOS allows an attacker to potentially bypass Zscaler controls.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zscaler | Client Connector | 0 – before Android: 4.2.0.1520 – before ChromeOS: 4.2.0.152 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L