CVE-2026-0244 Palo Alto Networks CVE debrief

Who should care

Organizations using Palo Alto Networks Prisma SD-WAN ION should prioritize patching this vulnerability to prevent potential man-in-the-middle attacks.

Technical summary

The vulnerability exists in the Palo Alto Networks Prisma SD-WAN ION due to improper certificate validation. This allows an attacker to impersonate the controller, potentially leading to unauthorized access or data breaches. The affected versions include 6.3.1 to 6.3.6, 6.4.1 to 6.4.3, and 6.5.1 to 6.5.3. Specific builds like 6.3.6:b6, 6.3.6:b9, 6.4.3:b6, 6.4.3:b8, 6.5.3:b11, 6.5.3:b9, and 6.5.3:i-b10 are also vulnerable.

Defensive priority

Medium priority should be given to patching this vulnerability, as it could allow for eavesdropping or impersonation of the controller in a man-in-the-middle attack.

Recommended defensive actions

• Inventory and assess Palo Alto Networks Prisma SD-WAN ION instances for vulnerability
• Apply patches or updates provided by Palo Alto Networks
• Implement compensating controls such as additional monitoring or network segmentation if patching is not immediately feasible
• Verify the integrity of certificates used in the environment
• Consider enhancing network security posture to detect and prevent man-in-the-middle attacks

Evidence notes

The CVE record was published on 2026-05-13T19:16:58.297Z and was last modified on 2026-07-14T14:16:14.433Z. The NVD entry is currently Analyzed. The source detail is limited, and evidence limits suggest that defenders should verify the integrity of certificates used in the environment and consider enhancing network security posture to detect and prevent man-in-the-middle attacks. Additional verification tasks are recommended to ensure the accuracy of the information.

Official resources