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medium advisory

CVE-2026-0240 Trust Protection Foundation Sensitive Information Disclosure Vulnerability

CVE-2026-0240 is a medium severity information disclosure vulnerability in Palo Alto Networks Trust Protection Foundation, allowing an authenticated attacker to obtain sensitive information from the server's vault, potentially leading to user impersonation and arbitrary modification of configuration settings.

CVE-2026-0240 is a sensitive information disclosure vulnerability affecting Palo Alto Networks Trust Protection Foundation. An authenticated attacker can exploit this vulnerability to gain access to sensitive information stored within the server’s vault. The vulnerability exists due to insufficient access controls on sensitive data. Successful exploitation could enable an attacker to impersonate any user within the environment and arbitrarily modify configuration settings. This issue was discovered internally by Palo Alto Networks security research teams and affects Trust Protection Foundation versions 25.3.0 before 25.3.3, 25.1.0 before 25.1.8, 24.3.0 before 24.3.6, and 24.1.0 before 24.1.13. Palo Alto Networks is not aware of any malicious exploitation of this issue.

Attack Chain

  1. An attacker gains initial access to the Trust Protection Foundation application with low-level privileges.
  2. The attacker sends a crafted request to the server targeting the component responsible for managing the vault.
  3. Due to missing access controls, the request bypasses intended security checks.
  4. The server exposes sensitive information from the vault, such as user credentials, API keys, or configuration details.
  5. The attacker uses the disclosed credentials to impersonate other users with higher privileges.
  6. The attacker leverages impersonated privileges to modify configuration settings, potentially compromising the entire system.

Impact

Successful exploitation of CVE-2026-0240 allows an authenticated attacker to obtain sensitive information, impersonate users, and arbitrarily modify configuration settings within the Trust Protection Foundation environment. This could lead to a complete compromise of the system’s confidentiality and integrity. While the specific number of affected customers is not disclosed, organizations using vulnerable versions of Trust Protection Foundation are at risk.

Recommendation

  • Upgrade Trust Protection Foundation to a patched version. Specifically, upgrade to version 25.3.3 or later if running 25.3.0 through 25.3.2, 25.1.8 or later if running 25.1.0 through 25.1.7, 24.3.6 or later if running 24.3.0 through 24.3.5, or 24.1.13 or later if running 24.1.0 through 24.1.12 (see Solution section).
  • Monitor Trust Protection Foundation logs for suspicious activity indicative of unauthorized access or data exfiltration.
  • Deploy the Sigma rules provided in this brief to detect potential exploitation attempts in your environment.

Detection coverage 2

Detect CVE-2026-0240 Exploitation Attempt - Suspicious Vault Access

medium

Detects CVE-2026-0240 exploitation attempt - abnormal access to the server vault component, potentially indicating information disclosure.

sigma tactics: discovery techniques: T1068 sources: webserver

Detect CVE-2026-0240 Exploitation Attempt - Configuration Modification

medium

Detects CVE-2026-0240 exploitation attempt - Unauthorized modification of system configuration after vault access, indicative of privilege escalation.

sigma tactics: privilege_escalation techniques: T1068 sources: webserver

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