CVE-2026-0243 PUBLISHED

Prisma SD-WAN: Denial of Service (DoS) Vulnerability Through IPv6 Crafted Packet

Assigner: palo_alto
Reserved: 03.11.2025 Published: 13.05.2026 Updated: 13.05.2026

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.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 4.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	Low
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Palo Alto Networks
Product	Prisma SD-WAN ION
Versions	Default: unaffected affected from 6.5.0 to 25.3.3 (excl.) affected from 6.4.0 to 25.1.8 (excl.) affected from 6.3.0 to 24.3.6 (excl.) Version 6.1.0 is unaffected Version 5.6.0 is unaffected

Exploits

Palo Alto Networks is not aware of any malicious exploitation of this issue.

Credits

Palo Alto Networks thanks our internal security research teams for discovering and reporting this issue. other

References

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

Problem Types

CWE-606 Unchecked Input for Loop Condition CWE

Impacts

CAPEC-130 Excessive Allocation