CVE-2026-25687

highpriority · track · 0EPSS 0.004 · 32 %ile
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.38% (32nd) EPSS
CVSS 8.1 · high
Is it mine?
0 products
Check your exposure
Who says so?
— sources

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

8.1
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · cve@zscaler.comexploitability 2.2 · impact 5.9
v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-366US
04

affected products

Products and version ranges known to be affected.

No affected products recorded.

05

sources

Which sources assert this record, and when.

NVDCVE.orgMITRE
published 2026-09-14modified 2026-09-18
06

references (1) nvd

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan