Quick answers
- Is CVE-2026-59570 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-59570 being exploited in the wild.
- How severe is CVE-2026-59570?
- High severity, with a CVSS score of 7.5, published 14 September 2026.
- Which products and versions are affected?
- Zscaler Client Connector.
- Is there a fix for CVE-2026-59570?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-59570 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-59570?
- Check whether you run Zscaler Client Connector. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This vulnerability in Zscaler Client Connector allows a pre-installed peer application to perform privileged operations (tunnel teardown, user logout, packet capture toggling) without proper authorization checks. The root cause is insufficient access control validation when peer applications interact with the Zscaler client process. Attack vector is local (same-device peer app execution); no network access or elevated privileges are explicitly required beyond the peer app's pre-installed presence. An attacker controlling or compromising a peer application can disrupt the secure tunnel and bypass security controls. Patches are available via Zscaler's official release notes.
Affected products
- Zscaler Client Connector
Timeline
- 2026-09-14: disclosed