What is the CVSS score of CVE-2026-22567?

CVE-2026-22567 has a CVSS 3.1 base score of 7.6 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-22567?

Within 24 hours: inventory all ZIA Admin UI users and validate that only authorized personnel retain admin access; restrict admin UI access to trusted IP ranges via network controls. Within 7 days: implement input validation monitoring and WAF rules to block malicious payloads targeting the vulnerable input fields; document the specific vulnerable fields from vendor advisories. Within 30 days: establish a tracking mechanism for patch availability; conduct a security review of admin UI access logs for anomalies; plan for immediate deployment once the patch is released.

Zscaler Internet Access Admin Portal CVE-2026-22567

HIGH

Improper Input Validation (CWE-20)

2026-02-23 cve@zscaler.com

Code Injection Zscaler Internet Access Admin Portal Zscaler

7.6

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Authenticate as administrator
Delivery

Access ZIA Admin UI
Exploit

Submit crafted input to vulnerable field
Execution

Trigger unvalidated backend function
Impact

Execute privileged operation

Vulnerability Assessment

Weakness	CWE CWE-20 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V2 - Validation and Business Logic Input validation, allowlisting
Exploitation Conditions	Authenticated administrator account with access to ZIA Admin UI. Attacker must have high-privilege credentials and knowledge of specific input fields accepting improper validation in limited backend function scenarios.
Impact	CVSS 7.6 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: None. Exploitation requires authentication.
Exploit ScenarioDerived	An attacker (requires authentication) could exploit this vulnerability to an authenticated administrator to initiate backend functions through specific in.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Zscaler Internet Access Admin Portal allows authenticated administrators to execute arbitrary backend functions through insufficient input validation in the web UI. This high-severity vulnerability requires administrative privileges and currently lacks a patch, limiting exposure but leaving affected organizations vulnerable until remediation is available. An attacker with admin credentials could bypass intended restrictions to perform unauthorized backend operations with cross-system impact.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 7.6

Improper validation of user-supplied input in the ZIA Admin UI could allow an authenticated administrator to initiate backend functions through specific input fields in limited scenarios. [CVSS 7.6 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-20 (Improper Input Validation). Affects Zscaler Internet Access Admin Portal. Improper validation of user-supplied input in the ZIA Admin UI could allow an authenticated administrator to initiate backend functions through specific input fields in limited scenarios.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.6 HIGH

AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

DescriptionCVE.org

Improper validation of user-supplied input in the ZIA Admin UI could allow an authenticated administrator to initiate backend functions through specific input fields in limited scenarios.

Executive ViewAI

Why It Matters

CVE-2026-22567 is a high-severity vulnerability in ZIA Admin UI that could allow authenticated administrators to execute unauthorized backend functions through manipulated input fields. While the attack requires valid admin credentials and the exploit probability is low (0.1% EPSS), the lack of an available patch creates operational risk for organizations relying on ZIA for security infrastructure.

Business Impact: High

Compensating Controls

Implement network segmentation to restrict ZIA Admin UI access to a limited set of trusted administrator workstations; deploy WAF rules to sanitize and block suspicious input patterns in the identified vulnerable fields; enforce multi-factor authentication for all admin accounts; enable comprehensive logging and alerting on admin UI activities; disable non-essential ZIA Admin UI features if they are not in use; establish a service account review process to minimize the number of accounts with admin privileges.

Threat Intelligence Overview

EPSS Score

0.1%

Top 75% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.