CVE-2021-26736 ZApp Installer Privilege Escalation Vulnerabilities
A local attacker can execute arbitrary code with SYSTEM privileges due to insecure binary loading in the Zscaler Client Connector installer.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-26736?
CVE-2021-26736 is a medium-severity vulnerability in Zscaler Client Connector, published on 23 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Multiple vulnerabilities in the Zscaler Client Connector Installer and Uninstaller for Windows prior to 3.6 allowed execution of binaries from a low privileged path. A local adversary may be able to execute code with SYSTEM privileges.
Which versions are affected by CVE-2021-26736?
It affects 1 product.
Products include Zscaler Client Connector.
How do I fix CVE-2021-26736?
No fix has been published for CVE-2021-26736 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26736 being exploited?
There is no known exploitation of CVE-2021-26736 in the wild and no public exploit code.
Other vulnerabilities in Zscaler Client Connector
Sources
Also known as GHSA-cmfg-v75g-8wm3.