Vulnerability · Published May 13, 2026 · Assigned by palo_alto
CVE-2026-0243Prisma SD-WAN: Denial of Service (DoS) Vulnerability Through IPv6 Crafted Packet
Medium 4.9
In plain English
A medium-severity security flaw in Prisma SD-WAN ION from Palo Alto Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 4.0)4.9Medium
Exploit odds (30 days)0.2%top 93.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Palo Alto Networks | Prisma SD-WAN ION | 6.5.0 – before 25.3.36.4.0 – before 25.1.86.3.0 – before 24.3.6 |
Weakness: CWE-606 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:U/AU:Y/R:U/V:D/RE:M/U:Amber
References
- https://security.paloaltonetworks.com/CVE-2026-0243 vendor-advisory