CVE-2026-5380: runZero Platform Information Disclosure

CVE-2026-5380 Overview

CVE-2026-5380 is a sensitive data exposure vulnerability in the runZero Platform that allows authorized users to view clear-text secrets for a subset of credential types and fields. This vulnerability stems from insufficiently protected credentials (CWE-522), where sensitive authentication data is not properly encrypted or masked within the application interface. An attacker with authorized access to the platform could potentially extract credential information that should remain obfuscated, leading to unauthorized access to connected systems and services.

Critical Impact

Authorized users can access clear-text secrets and credential data that should be protected, potentially compromising connected systems and enabling lateral movement within the network.

Affected Products

• runZero Platform versions prior to 4.0.260204.2

Discovery Timeline

• April 7, 2026 - CVE CVE-2026-5380 published to NVD
• April 8, 2026 - Last updated in NVD database

Technical Details for CVE-2026-5380

Vulnerability Analysis

This vulnerability represents an insufficiently protected credentials issue within the runZero Platform's credential management system. The platform, designed for network discovery and asset inventory, stores various credential types to authenticate against network devices and services during scanning operations. Due to improper access controls and insufficient credential protection mechanisms, authorized users with platform access can view credentials in clear-text form rather than seeing properly masked or encrypted representations.

The vulnerability affects a subset of credential types and fields, suggesting that the exposure is limited to specific credential storage mechanisms or user interface components within the platform. The attack requires user interaction and has high complexity requirements, which limits the exploitation surface but does not eliminate the risk entirely.

Root Cause

The root cause of CVE-2026-5380 is classified as CWE-863 (Incorrect Authorization) in the NVD taxonomy and CWE-522 (Insufficiently Protected Credentials) per the vendor advisory. The vulnerability exists because the runZero Platform failed to properly enforce authorization checks or encryption requirements when displaying credential information to authenticated users. This allowed credentials that should be protected through encryption at rest and masked during display to be exposed in their clear-text form through the platform's user interface or API responses.

Attack Vector

The attack vector for CVE-2026-5380 requires network access to the runZero Platform and relies on user interaction. An attacker would need to:

1. Obtain authorized access to the runZero Platform (either through legitimate credentials or through a separate account compromise)
2. Navigate to or query the credential management functionality
3. View the exposed clear-text secrets for vulnerable credential types
4. Utilize the extracted credentials to access connected systems and services

The high attack complexity and required user interaction reduce the likelihood of opportunistic exploitation, but the potential for high confidentiality impact makes this vulnerability significant for organizations storing sensitive credentials in the platform.

Detection Methods for CVE-2026-5380

Indicators of Compromise

• Unusual access patterns to credential management interfaces within the runZero Platform
• API requests specifically targeting credential retrieval endpoints
• Audit logs showing credential access by users who do not typically manage credentials
• Unexpected authentication attempts to connected systems using previously stored credentials

Detection Strategies

• Enable detailed audit logging for all credential access operations in the runZero Platform
• Monitor API calls to credential-related endpoints for unusual frequency or user patterns
• Implement alerting on credential view operations, especially bulk credential access attempts
• Review platform access logs for users querying credential fields they don't normally access

Monitoring Recommendations

• Configure SIEM integration with runZero Platform audit logs to detect anomalous credential access
• Establish baseline patterns for credential management operations and alert on deviations
• Monitor authentication logs on systems connected to runZero for credential reuse after platform access
• Implement user behavior analytics to identify potential insider threat scenarios exploiting this vulnerability

How to Mitigate CVE-2026-5380

Immediate Actions Required

• Upgrade the runZero Platform to version 4.0.260204.2 or later immediately
• Review audit logs for any unauthorized credential access that may have occurred prior to patching
• Rotate credentials stored in the runZero Platform, especially those for critical infrastructure systems
• Review user access permissions and apply principle of least privilege to credential management functions

Patch Information

RunZero has released version 4.0.260204.2 which addresses this vulnerability. The fix ensures that credentials are properly protected and not displayed in clear-text to authorized users. Organizations should update to this version as soon as possible. Detailed release information is available in the RunZero Release Notes and the RunZero Security Advisory for CVE-2026-5380.

Workarounds

• Restrict access to the runZero Platform to only essential personnel until the patch is applied
• Implement network segmentation to limit platform access from untrusted network segments
• Temporarily remove or disable stored credentials for critical systems if immediate patching is not possible
• Enable enhanced monitoring and auditing on the platform to detect potential exploitation attempts