CVE-2026-0244 PUBLISHED

Prisma SD-WAN: Improper Certificate Validation Vulnerability

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

An improper certificate validation vulnerability in the Palo Alto Networks Prisma SD-WAN ION enables man-in-the-middle (MitM) attacker to impersonate the controller.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U/V:D/RE:M/U:Amber
CVSS Score: 5.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
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 6.5.3-b15 (excl.) affected from 6.4.0 to 6.4.3-b8 (excl.) affected from 6.3.0 to 6.3.6-b10 (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-2026-0244

Problem Types

CWE-295 Improper Certificate Validation CWE

Impacts

CAPEC-94 Adversary in the Middle (AiTM)