What is the CVSS score of CVE-2026-26418?

CVE-2026-26418 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-26418?

Within 24 hours: Identify all systems running TCS Cognix Recon Client v3.0 and assess which contain sensitive data; isolate affected systems from production networks where possible. Within 7 days: Contact TCS for patch availability timeline and interim guidance; implement network segmentation to restrict API access to trusted internal networks only. Within 30 days: Deploy available patches or upgrades immediately upon release; conduct security audit of affected systems for signs of unauthorized access; implement WAF rules blocking unauthenticated API requests if patch delays persist.

Cognix Platform CVE-2026-26418

HIGH

Improper Access Control (CWE-284)

2026-03-05 cve@mitre.org

Authentication Bypass Cognix Platform Tcs

7.5

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Send unauthenticated network request to Cognix Recon Client web API
Exploit

Bypass missing authentication checks
Execution

Access restricted application functionality
Impact

Retrieve sensitive data

Vulnerability Assessment

Weakness	CWE CWE-284 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Access control enforcement MITRE ATT&CK 1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	No special conditions — remote unauthenticated exploitation against default configurations of Tata Consultancy Services Cognix Recon Client v3.0 with exposed web API endpoint.
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitable via remote/network.
Exploit ScenarioDerived	A remote attacker could exploit this vulnerability to access application functionality without restriction via the network.

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

Cognix Platform's web API lacks authentication and authorization controls, enabling unauthenticated remote attackers to access restricted application functionality over the network. This vulnerability affects Tata Consultancy Services Cognix Recon Client v3.0 and poses a high risk due to its ease of exploitation and lack of authentication requirements. No patch is currently available.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:06 CVSS 7.5

Missing authentication and authorization in the web API of Tata Consultancy Services Cognix Recon Client v3.0 allows remote attackers to access application functionality without restriction via the network. [CVSS 7.5 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-284 (Improper Access Control). Affects the web API of Tata Consultancy component of Cognix Platform. Missing authentication and authorization in the web API of Tata Consultancy Services Cognix Recon Client v3.0 allows remote attackers to access application functionality without restriction via the network.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

DescriptionCVE.org

Executive ViewAI

Why It Matters

TCS Cognix Recon Client v3.0 contains a critical authentication bypass vulnerability that allows unauthenticated remote attackers to access sensitive application functionality without credentials. Organizations using this software face immediate risk of unauthorized data access and system compromise until remediation is completed.

Business Impact: High

Compensating Controls

Restrict API endpoint access via network firewall to authorized internal networks only; implement Web Application Firewall (WAF) rules requiring authentication tokens for all API requests; disable TCS Cognix Recon Client v3.0 APIs externally and require VPN access for all users; monitor API logs for unauthorized access attempts; consider upgrading to newer software versions if available; segment network to isolate vulnerable systems from critical data repositories.

Threat Intelligence Overview

EPSS Score

0.1%

Top 73% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

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.