File Type Control rule bypass
Summary
| CVE | CVE-2026-25684 |
|---|---|
| State | PUBLISHED |
| Assigner | Zscaler |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-18 15:17:07 UTC |
| Updated | 2026-09-18 19:08:02 UTC |
| Description | A file type attribution issue in Zscaler Internet Access File Type Control evaluation rules may allow improper evaluation of File Type Control policies in rare circumstances. |
Risk And Classification
Primary CVSS: v3.1 4.4 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.001850000 probability, percentile 0.083400000 (date 2026-09-21)
Problem Types: CWE-20 | CWE-20 CWE-20 Improper input validation
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 4.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N |
| 3.1 | CNA | CVSS | 4.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
LowUser Interaction
RequiredScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Zscaler | ZIA File Type Control | unaffected 6.2r (current) custom | Cloud |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| help.zscaler.com/zia/release-upgrade-summary-2026 | [email protected] | help.zscaler.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Nate Subra and Nathan Fowler (en)
There are currently no legacy QID mappings associated with this CVE.