PALO ALTO Security Advisory
Published Date: May 13, 2026
CVE: CVE-2026-0243
Advisory Summary
Palo Alto Networks has disclosed a Medium severity denial of service (DoS) vulnerability identified as CVE-2026-0243 affecting the Prisma SD-WAN solution. This flaw can be triggered through a specially crafted IPv6 packet which, when processed by the network device, may lead to service disruption. Given the critical role SD-WAN plays in modern enterprise network connectivity and traffic management, this vulnerability poses a notable risk of network downtime or degraded service affecting operations.
Enterprises leveraging Prisma SD-WAN should act promptly to apply the recommended security patches or mitigations provided by Palo Alto Networks to prevent exploitation. Monitoring network traffic for unusual IPv6 packets is advised as a temporary protective measure. Ensuring firmware and software are kept current will mitigate potential attack vectors related to IPv6 handling.
This incident underscores the ongoing challenge of securing complex networking infrastructure against protocol-specific attacks and highlights the importance of routine vulnerability management in SD-WAN environments.
🛡️
Reference: Vendor Advisory