CVE-2026-25684: CWE-20 Improper input validation in Zscaler ZIA File Type Control
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-25684) concerns a file type attribution issue in Zscaler Internet Access (ZIA) File Type Control evaluation rules. The improper input validation (CWE-20) may lead to incorrect enforcement of File Type Control policies in rare circumstances. The CVSS 3.1 base score is 4.4 (medium severity) with network attack vector, high attack complexity, low privileges required, user interaction required, and impacts on confidentiality and integrity with no availability impact. No vendor advisory or patch information is available to confirm remediation status.
Potential Impact
The vulnerability could allow improper evaluation of file type control policies, potentially leading to unauthorized file types being allowed or blocked incorrectly. The impact affects confidentiality and integrity but not availability. Exploitation requires user interaction and has high attack complexity, limiting the likelihood of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Users should monitor Zscaler advisories for updates.
CVE-2026-25684: CWE-20 Improper input validation in Zscaler ZIA File Type Control
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.
CVSS v3.1
Score 4.4medium
Affected software
Zscaler
ZIA File Type Control
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-25684) concerns a file type attribution issue in Zscaler Internet Access (ZIA) File Type Control evaluation rules. The improper input validation (CWE-20) may lead to incorrect enforcement of File Type Control policies in rare circumstances. The CVSS 3.1 base score is 4.4 (medium severity) with network attack vector, high attack complexity, low privileges required, user interaction required, and impacts on confidentiality and integrity with no availability impact. No vendor advisory or patch information is available to confirm remediation status.
Potential Impact
The vulnerability could allow improper evaluation of file type control policies, potentially leading to unauthorized file types being allowed or blocked incorrectly. The impact affects confidentiality and integrity but not availability. Exploitation requires user interaction and has high attack complexity, limiting the likelihood of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Users should monitor Zscaler advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Zscaler
- Date Reserved
- 2026-02-05T05:00:40.581Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aad4b7355bf5e2cf51f5ecb
Added to database: 09/18/2026, 14:32:19 UTC
Last enriched: 09/18/2026, 14:47:20 UTC
Last updated: 09/19/2026, 01:42:27 UTC
Views: 23
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