CVE-2026-0243 Prisma SD-WAN: Denial of Service (DoS) Vulnerability Through IPv6 Crafted Packet
An unauthenticated network-adjacent attacker can cause system disruption on Prisma SD-WAN ION devices by sending a specially crafted IPv6 packet.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-0243?
CVE-2026-0243 is a medium-severity denial of service vulnerability in Palo Alto Networks Prisma SD-WAN ION, published on 13 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to cause a system disruption by sending a specially crafted IPv6 packet.
Weakness: CWE-606
Which versions are affected by CVE-2026-0243?
It affects 1 product.
Products include Paloaltonetworks Prisma Sd-Wan.
How do I fix CVE-2026-0243?
No fix has been published for CVE-2026-0243 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-0243 being exploited?
There is no known exploitation of CVE-2026-0243 in the wild and no public exploit code.
Other vulnerabilities in Palo Alto Networks Prisma SD-WAN ION
Sources
Also known as GHSA-j263-ghj6-w2q7.