CVE-2021-26734 Junction Delete leading to elevation of privilege
A local attacker can exploit improper junction handling during uninstallation to delete folders with elevated privileges, leading to privilege escalation.
- 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-2021-26734?
CVE-2021-26734 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
Zscaler Client Connector Installer on Windows before version 3.4.0.124 improperly handled directory junctions during uninstallation. A local adversary may be able to delete folders in an elevated context.
Weakness: CWE-269
Which versions are affected by CVE-2021-26734?
It affects 1 product.
Products include Zscaler Client Connector.
How do I fix CVE-2021-26734?
No fix has been published for CVE-2021-26734 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26734 being exploited?
There is no known exploitation of CVE-2021-26734 in the wild and no public exploit code.
Other vulnerabilities in Zscaler Client Connector
Sources
Also known as GHSA-r4fj-mm48-prvv.