CVE-2026-25687
ZCC race condition in ZPA tunnel handler
Description
A race condition in the ZPA tunnel handler of affected versions of Zscaler Client Connector (ZCC) allows a heap corruption, resulting in a denial of service (client crash) and potentially arbitrary code execution in the context of the ZCC process.
INFO
Published Date :
Sept. 14, 2026, 2:37 p.m.
Last Modified :
Sept. 14, 2026, 2:37 p.m.
Remotely Exploit :
Yes !
Source :
Zscaler
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 73c6f63b-efac-410d-a0a9-569700f85a04 |
Solution
- Update Zscaler Client Connector to a patched version.
- Apply vendor-supplied security patches.
- Restart the ZCC process after updating.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-25687 vulnerability anywhere in the article.