1. Home
  2. CVE Database
  3. CVE-2026-0243
MEDIUM · 6.5

CVE-2026-0243

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 disrup...

Vulnerability 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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
PaloaltonetworksPrisma Sd-Wan>= 6.3.1, < 6.3.6
PaloaltonetworksIon 1200-
PaloaltonetworksIon 1200-C-Na-
PaloaltonetworksIon 1200-C-Row-
PaloaltonetworksIon 1200-C5G-Ww-
PaloaltonetworksIon 1200-S-
PaloaltonetworksIon 1200-S-C-Na-
PaloaltonetworksIon 1200-S-C-Row-
PaloaltonetworksIon 1200-S-C5G-Ww-
PaloaltonetworksIon 3102V-
PaloaltonetworksIon 3104V-
PaloaltonetworksIon 3108V-
PaloaltonetworksIon 3200-
PaloaltonetworksIon 3200H-
PaloaltonetworksIon 3200H-C5G-Ww-
PaloaltonetworksIon 5200-
PaloaltonetworksIon 7108V-
PaloaltonetworksIon 7116V-
PaloaltonetworksIon 9200-
PaloaltonetworksPa-5440-

Related Weaknesses (CWE)

CWE-606

References

FAQ

What is CVE-2026-0243?

CVE-2026-0243 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 disrup...

How severe is CVE-2026-0243?

CVE-2026-0243 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-0243?

Check the references section above for vendor advisories and patch information. Affected products include: Paloaltonetworks Prisma Sd-Wan, Paloaltonetworks Ion 1200, Paloaltonetworks Ion 1200-C-Na, Paloaltonetworks Ion 1200-C-Row, Paloaltonetworks Ion 1200-C5G-Ww.