What is CVE-2021-26737?

CVE-2021-26737 is a medium-severity vulnerability in Zscaler Client Connector, classified under Origin Validation Error. CVSS score: 5.5/10. Published 2023-10-23.

How severe is CVE-2021-26737?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Zscaler Client Connector

CVE-2021-26737

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.

EPSS: 0.001 (1.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Zscaler Client Connector — versions 0
Zscaler Client_connector

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

cve@zscaler.com (Release Notes)

Frequently asked questions

What is CVE-2021-26737?: CVE-2021-26737 is a medium-severity vulnerability in Zscaler Client Connector, classified under Origin Validation Error. CVSS score: 5.5/10. Published 2023-10-23.
How severe is CVE-2021-26737?: Medium severity. CVSS v3 base score is 5.5 out of 10.