CVE-2026-25684 PUBLISHED

File Type Control rule bypass

Assigner: Zscaler
Reserved: 05.02.2026 Published: 18.09.2026 Updated: 18.09.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS Score: 4.4

Attack Vector	Network	Scope	Changed
Attack Complexity	High	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	Low
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Zscaler
Product	ZIA File Type Control
Versions	Default: unaffected unaffected from 0 to 6.2r (current) (excl.)

Credits

Nate Subra and Nathan Fowler finder

References

https://help.zscaler.com/zia/release-upgrade-summary-2026

Problem Types

CWE-20 Improper input validation CWE

Impacts

CAPEC-554 Functionality Bypass