CVE-2021-26734
MEDIUMCVSS 5.5/10EPSS 0.14%
Last modified
CVE-2021-26734 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. . EPSS estimates a 0.14% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Zscaler | Client Connector | < 3.4.0.124 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26734?
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.
How severe is CVE-2021-26734?
CVE-2021-26734 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26734?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-26728Command injection and stack-based buffer overflow vulnerabil…9.8
- CVE-2021-26729Command injection and multiple stack-based buffer overflows …9.8
- CVE-2021-26730A stack-based buffer overflow vulnerability in a subfunction…9.8
- CVE-2021-26731Command injection and multiple stack-based buffer overflows …9.8
- CVE-2021-26732A broken access control vulnerability in the First_network_f…5.3
- CVE-2021-26733A broken access control vulnerability in the FirstReset_hand…7.5
- CVE-2021-26735The Zscaler Client Connector Installer and Unsintallers for …7.8
- CVE-2021-26736Multiple vulnerabilities in the Zscaler Client Connector Ins…7.8
- CVE-2021-26737The Zscaler Client Connector for macOS prior to 3.6 did not …4.7
- CVE-2021-26738Zscaler Client Connector for macOS prior to 3.7 had an unquo…7.8
- CVE-2021-26739SQL Injection vulnerability in pay.php in millken doyocms 2.…9.8
- CVE-2021-26740Arbitrary file upload vulnerability sysupload.php in millken…9.8
Are you affected by CVE-2021-26734?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST