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PAN-OS CVE-2026-0261

| EUVDEUVD-2026-30107 MEDIUM
OS Command Injection (CWE-78)
2026-05-13 palo_alto GHSA-3jxr-6794-xw26
6.1
CVSS 4.0 · Vendor: palo_alto
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Severity by source

Vendor (palo_alto) PRIMARY
6.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:C/RE:M/U:Amber

Primary rating from Vendor (palo_alto) · only source for this CVE.

CVSS VectorVendor: palo_alto

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

5
Analysis Generated
Jun 08, 2026 - 10:43 vuln.today
Patch available
May 13, 2026 - 20:02 EUVD
CVSS changed
May 13, 2026 - 19:22 NVD
6.1 (MEDIUM)
CVE Published
May 13, 2026 - 17:59 nvd
UNKNOWN (no severity yet)
CVE Published
May 13, 2026 - 17:59 nvd
MEDIUM 6.1

DescriptionCVE.org

Multiple command injection vulnerabilities in Palo Alto Networks PAN-OS® software enable 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 CLI or Web UI.

The security risk posed by this issue is significantly minimized when CLI access is restricted to a limited group of administrators and by restricting access to the management web 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 impacted by these vulnerabilities.

AnalysisAI

Multiple command injection vulnerabilities in Palo Alto Networks PAN-OS allow an authenticated administrator to escape system restrictions and execute arbitrary commands with root-level privileges on affected firewalls and Panorama management platforms. Affected deployments include PA-Series and VM-Series firewalls and Panorama (virtual and M-Series appliances) across PAN-OS versions 10.2, 11.1, 11.2, and 12.1. An attacker who already holds administrative credentials and can reach the CLI or Web UI can leverage these flaws to fully compromise the underlying OS. No public exploit code exists and no KEV listing is present at time of analysis, consistent with the very low EPSS score of 0.08% (24th percentile).

Technical ContextAI

CWE-78 (Improper Neutralization of Special Elements used in an OS Command, aka OS Command Injection) describes the root cause: user-controlled input is passed to a system shell without sufficient sanitization, allowing shell metacharacters to inject additional commands. The vulnerability exists in multiple locations within the PAN-OS codebase, accessible through both the PAN-OS command-line interface and the Web UI administrative interface. Affected CPE is cpe:2.3:a:palo_alto_networks:pan-os on PA-Series hardware firewalls, VM-Series virtual firewalls, and Panorama management appliances (virtual and M-Series). Although the NVD CPE data lists cpe:2.3:a:palo_alto_networks:cloud_ngfw and cpe:2.3:a:palo_alto_networks:prisma_access, the vendor advisory explicitly states Cloud NGFW and Prisma Access are NOT impacted - this CPE inclusion appears to be a data artifact and should be disregarded. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:N) confirms the attack is delivered over the network with no additional attack complexity, but only reachable by an already-authenticated high-privilege (administrator) account.

RemediationAI

The primary remediation is to upgrade PAN-OS to one of the vendor-released fixed versions: 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, or 10.2.7-h34 for the 10.2 train; 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, or 11.1.4-h33 for the 11.1 train; 11.2.12, 11.2.10-h6, 11.2.7-h13, or 11.2.4-h17 for the 11.2 train; and 12.1.7 or 12.1.4-h5 for the 12.1 train. See the official advisory at https://security.paloaltonetworks.com/CVE-2026-0261 for the full matrix. Where immediate patching is not possible, apply the vendor's recommended best-practice management access hardening: restrict CLI access to the smallest possible set of named administrators (reducing the number of accounts that could exploit the flaw), and restrict access to the Web UI management interface to trusted internal IP addresses only using management access control lists. Note that these compensating controls reduce but do not eliminate risk - a compromised or malicious administrator account within the allowed IP range retains the ability to exploit this issue until patching is applied. Reducing administrative account sprawl (disabling shared or unused admin accounts) further limits exposure.

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CVE-2026-0261 vulnerability details – vuln.today

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