Zscaler, Inc.

Zscaler, Inc. is a prominent cloud security platform vendor whose vulnerability footprint, though concentrated in a narrow set of products, reaches a wide deployment base through its client connectors, proxy infrastructure, and administrative portals that mediate enterprise internet and SaaS access. Vulnerabilities affecting the vendor skew toward serious outcomes, with a meaningful share reaching critical severity, and recur across weakness classes including improper cryptographic signature verification, input validation flaws, origin validation errors, and integrity-check bypass conditions—reflecting the authentication, encryption, and request-validation demands of a gateway positioned between endpoints and cloud services. The exposure clusters in the Client Connector, Internet Access Admin Portal, and proxy components, which are foundational to the vendor's zero-trust architecture and thus high-value targets for compromise. Defenders should treat Zscaler advisories as high-priority given the vendor's role in access control and the critical-severity tendency, and should inventory affected client and gateway deployments; current severity, exploitation activity, and exposure counts are shown alongside this summary.