CVE-2021-26737: Privilege Escalation Using PID Reuse in ZCC macOS
First published: Mon Oct 23 2023(Updated: )
The Zscaler Client Connector for macOS prior to 3.6 did not sufficiently validate RPC clients. A local adversary without sufficient privileges may be able to shutdown the Zscaler tunnel by exploiting a race condition.
Credit: cve@zscaler.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zscaler Client Connector | <3.6 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Frequently Asked Questions
What is CVE-2021-26737?
CVE-2021-26737 is a vulnerability that allows a local adversary without sufficient privileges to shutdown the Zscaler tunnel by exploiting a race condition in the Zscaler Client Connector for macOS prior to version 3.6.
How does CVE-2021-26737 affect Zscaler Client Connector for macOS?
CVE-2021-26737 affects Zscaler Client Connector for macOS prior to version 3.6, allowing a local adversary to shut down the Zscaler tunnel.
What is the severity of CVE-2021-26737?
CVE-2021-26737 has a severity rating of 5.5 (Medium).
How can I fix CVE-2021-26737?
To fix CVE-2021-26737, update Zscaler Client Connector for macOS to version 3.6 or later.
Where can I find more information about CVE-2021-26737?
More information about CVE-2021-26737 can be found at the following link: [Zscaler Client Connector App Release Summary](https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS&applicable_version=3.6&deployment_date=2022-01-07&id=1388686)
- agent/type
- agent/softwarecombine
- agent/first-publish-date
- agent/event
- agent/references
- agent/title
- agent/weakness
- agent/severity
- agent/author
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
- agent/tags
- collector/nvd-api
- agent/software-canonical-lookup-request
- vendor/zscaler
- canonical/zscaler client connector