CVE-2026-0320 in PAN-OS
Summary
by MITRE • 10/15/2026
A command injection vulnerability in Palo Alto Networks PAN-OS® software enables an authenticated administrator to bypass system restrictions and run arbitrary commands as a root user. To be able to exploit this issue, the user must have access to the PAN-OS management interface.
The security risk posed by this issue is significantly minimized by restricting access to the management interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not affected by this vulnerability.
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Analysis
by VulDB Data Team • 10/15/2026
A critical command injection vulnerability exists within the Palo Alto Networks PAN-OS operating system, allowing an authenticated administrator to execute arbitrary commands with root-level privileges. This flaw represents a severe compromise of the device's integrity, as it effectively bypasses all intended access controls and security restrictions configured by the network operator. The vulnerability stems from insufficient input validation or improper sanitization of user-supplied data within specific management interface components, which permits the injection of malicious shell commands that are then executed with the highest level of system authority. This capability transforms a standard administrative account into a full root compromise vector, enabling attackers to modify system configurations, exfiltrate sensitive data, install persistent backdoors, or pivot further into the protected network infrastructure without detection by standard security controls.
The operational impact of this vulnerability is profound due to its high severity and ease of exploitation for those with valid credentials. An attacker who has obtained administrative access through credential theft, phishing, or other means can leverage this flaw to gain complete control over the firewall or management appliance. This level of access allows for the disabling of logging mechanisms, alteration of security policies to permit unauthorized traffic, and potential disruption of network services. Furthermore, because PAN-OS devices often serve as critical gateways between internal networks and external threats, compromising them can lead to widespread data breaches and lateral movement across the enterprise environment. The vulnerability affects PA-Series physical firewalls, VM-Series virtual fire deployed in cloud environments, Panorama management servers both virtual and M-series hardware variants, indicating a broad scope of potential impact across various deployment models used by organizations worldwide.
Mitigation strategies must focus on strict access control policies to minimize the attack surface available to potential adversaries. Palo Alto Networks strongly recommends restricting access to the PAN-OS management interface exclusively to trusted internal IP addresses using firewall rules or network segmentation techniques. This practice aligns with industry best practices for securing administrative interfaces and significantly reduces the risk of exploitation by limiting exposure to untrusted networks such as the public internet. Organizations should also implement multi-factor authentication for all administrative accounts, enforce strong password policies, and regularly audit user permissions to ensure that only necessary personnel have access to critical management functions. Additionally, keeping PAN-OS software updated with the latest security patches provided by Palo Alto Networks is essential to remediate this specific flaw once a fix is available.
From a classification perspective, this vulnerability aligns with CWE-78 Improper Neutralization of Special Elements used in an OS Command commonly known as command injection. The exploitation technique corresponds to ATT&CK T1059 Command and Scripting Interpreter where adversaries use operating system utilities or scripts to execute commands on remote systems. By understanding these mappings, security teams can better monitor for indicators of compromise associated with unauthorized command execution attempts within the management plane. Continuous monitoring of administrative login activities and command history logs is advised to detect any anomalous behavior that may indicate an active exploitation attempt against this vulnerability.