Zscaler vulnerabilitiesNone on the known-exploited list.

Vendor
The short answer

Zscaler has 34 published vulnerabilities across 4 products in our catalogue. None of them is on the list of flaws known to be exploited today. The most affected product is Client Connector, with 31. If you run Zscaler software, patch the exploited flaws first.

See the exploited flaws

We keep watching the known-exploited list.

Products

Which Zscaler products have the most vulnerabilities?

Client Connector leads with 31 published vulnerabilities. Open a product to see its versions and which of its flaws criminals are already using.

Known exploited

Which Zscaler vulnerabilities are being exploited?

This is the list that matters most: flaws criminals are using now.

None of Zscaler's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

Exploit likelihood

Which Zscaler flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 4.1%

    DHCP can add routes to a client’s routing table via the classless static route option (121).

    CVSS7.6Published6 May 2024
  2. 1.9%

    The Zscaler Client Connector for Windows prior to 2.1.2.74 had a stack based buffer overflow when connecting to misconfigured TLS servers.

    CVSS9.8Published15 Jul 2021
  3. 0.7%

    An Improper Input Validation vulnerability in Zscaler Client Connector on MacOS allows OS Command Injection.

    CVSS9.8Published6 Aug 2024
  4. 0.5%

    When using local accounts for administration, the redirect url parameter was not encoded correctly, allowing for an XSS attack providing admin login.

    CVSS6.1Published22 Jun 2023
  5. 0.5%

    The Zscaler Client Connector for Windows prior to 2.1.2.105 had a DLL hijacking vulnerability caused due to the configuration of OpenSSL.

    CVSS7.8Published15 Jul 2021
  6. 0.4%

    A URL parameter during login flow was vulnerable to injection.

    CVSS6.1Published22 Jun 2023
  7. 0.4%

    The Zscaler Client Connector prior to 3.1.0 did not sufficiently validate RPC clients, which allows a local adversary to execute code with system privileges or perform limited actions for which they did not have...

    CVSS7.8Published16 Feb 2021
  8. 0.4%

    In certain cases, Zscaler Internet Access (ZIA) can be disabled by PowerShell commands with admin rights.

    CVSS4.9Published6 Aug 2024
  9. 0.4%

    An Improper Verification of Cryptographic Signature in the SAML authentication of the Zscaler Admin UI allows a Privilege Escalation.This issue affects Admin UI: from 6.2 before 6.2r.

    CVSS9.8Published31 Aug 2023
  10. 0.4%

    Inappropriate file type control in Zscaler Proxy versions 3.6.1.25 and prior allows local attackers to bypass file download/upload restrictions.

    CVSS5.5Published31 Aug 2023
Every product

All Zscaler products we track.

3 products, most vulnerabilities first. Find the ones you run, then open a product to see its versions and exploited flaws.

This directory lists the 3 Zscaler products with at least one tracked version, of 4 in our catalogue.

Precursor Intelligence

Running Zscaler? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

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FAQ

Common questions, answered plainly.

Something else? Talk to the team →

Our catalogue lists 34 published vulnerabilities across 4 products and 70 versions from Zscaler.

None of Zscaler's vulnerabilities is on the list of flaws known to be exploited today.

Client Connector, with 31 published vulnerabilities. Its own page lists the ones known to be exploited.

Create a Precursor Intelligence account and track the Zscaler products you run. We match them against every published flaw, give each one a risk score from 0 to 100 and tell you as soon as we spot one that affects you, by email, in the app or by webhook.