SB2026051515 - Multiple vulnerabilities in Palo Alto Prisma SD-WAN ION

Description

This security bulletin contains information about 2 vulnerabilities.

1) Unchecked Input for Loop Condition (CVE-ID: CVE-2026-0243)

CWE-ID: CWE-606 - Unchecked Input for Loop Condition

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to unchecked input for loop condition. A remote attacker on the local network can pass specially crafted input to the application and perform a denial of service (DoS) attack.

2) Improper Certificate Validation (CVE-ID: CVE-2026-0244)

CWE-ID: CWE-295 - Improper Certificate Validation

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper certificate validation. A remote attacker on the local network can perform a man-in-the-middle (MitM) attack to impersonate the controller.

Remediation

Install update from vendor's website.

References

• https://security.paloaltonetworks.com/CVE-2026-0243
• https://security.paloaltonetworks.com/CVE-2026-0244