Vendor
Zscaler vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 11 vulnerabilities in Zscaler: 0 in the last 7 days and 10 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-59563, was published on 28 September 2026. Nothing in the last four weeks, down from 5 vulnerabilities in the four before. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 10
- Critical, all time
- 2
- Exploited in the wild
- 0
About Zscaler
Zscaler is a cloud security company that provides web security, sandboxing, and next-generation firewalls.
Zscaler technologies
Latest Zscaler vulnerabilities
- CVE-2026-59563: Zscaler MCP Server HMAC token replay vulnerabilitymediumCVSS 4.6
- CVE-2026-25684: Zscaler Internet Access file type control bypassmediumCVSS 4.4EPSS 0.2%
- CVE-2026-59570: Zscaler Client Connector peer app access control bypasshighCVSS 7.5EPSS 0.1%
- CVE-2026-59569: Zscaler Client Connector improper input validation on Android and ChromeOShighCVSS 8.1EPSS 0.2%
- CVE-2026-25687: Zscaler Client Connector race condition in ZPA tunnel handlerhighCVSS 8.1EPSS 0.4%
- CVE-2026-59568: Zscaler Client Connector remote code executioncriticalCVSS 9.1EPSS 0.7%
- CVE-2026-59567: Zscaler Client Connector local privilege escalationhighCVSS 8.8EPSS 0.1%
- CVE-2026-59566: Zscaler Client Connector buffer overflow on Android and ChromeOShighCVSS 8.4EPSS 0.2%
- CVE-2026-59565: Zscaler Client Connector buffer overflow denial-of-servicehighCVSS 8.8EPSS 0.5%
- CVE-2026-59564: Zscaler Client Connector authentication bypasscriticalCVSS 9.1EPSS 0.5%
- CVE-2026-22569: Zscaler Client Connector inspection bypass on WindowsmediumCVSS 5.4EPSS 0.2%
Most severe Zscaler vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-59568: Zscaler Client Connector remote code executioncriticalCVSS 9.1EPSS 0.7%
- CVE-2026-59564: Zscaler Client Connector authentication bypasscriticalCVSS 9.1EPSS 0.5%
- CVE-2026-59565: Zscaler Client Connector buffer overflow denial-of-servicehighCVSS 8.8EPSS 0.5%
- CVE-2026-59567: Zscaler Client Connector local privilege escalationhighCVSS 8.8EPSS 0.1%
- CVE-2026-59566: Zscaler Client Connector buffer overflow on Android and ChromeOShighCVSS 8.4EPSS 0.2%
- CVE-2026-25687: Zscaler Client Connector race condition in ZPA tunnel handlerhighCVSS 8.1EPSS 0.4%
- CVE-2026-59569: Zscaler Client Connector improper input validation on Android and ChromeOShighCVSS 8.1EPSS 0.2%
- CVE-2026-59570: Zscaler Client Connector peer app access control bypasshighCVSS 7.5EPSS 0.1%
- CVE-2026-22569: Zscaler Client Connector inspection bypass on WindowsmediumCVSS 5.4EPSS 0.2%
- CVE-2026-59563: Zscaler MCP Server HMAC token replay vulnerabilitymediumCVSS 4.6
Vulnerabilities per week
Nothing in the last four weeks, down from 5 vulnerabilities in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 5 | 2 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 4 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 1 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Zscaler vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/zscaler)<a href="https://junglewise.ai/threats/vendors/zscaler"><img src="https://junglewise.ai/threats/vendors/zscaler/badge.svg" alt="Zscaler vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/zscaler.json, and this page as text at https://junglewise.ai/threats/vendors/zscaler.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Zscaler vulnerabilities", https://junglewise.ai/threats/vendors/zscaler, 9 November 2026.