CVE-2026-0244

HIGH

Prisma SD-WAN: Improper Certificate Validation Vulnerability

Title source: cna

Description

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.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

https://security.paloaltonetworks.com/CVE-2026-0244

Scores

CVSS v3 8.1

EPSS 0.0022

EPSS Percentile 12.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-295

Status published

Products (9)

Palo Alto Networks/Prisma SD-WAN ION 5.6.0

Palo Alto Networks/Prisma SD-WAN ION 6.1.0

Palo Alto Networks/Prisma SD-WAN ION 6.3.0 - 6.3.6-b10

Palo Alto Networks/Prisma SD-WAN ION 6.4.0 - 6.4.3-b8

Palo Alto Networks/Prisma SD-WAN ION 6.5.0 - 6.5.3-b15

paloaltonetworks/prisma_sd-wan 6.3.6 (3 CPE variants)

paloaltonetworks/prisma_sd-wan 6.4.3 (3 CPE variants)

paloaltonetworks/prisma_sd-wan 6.5.3 (4 CPE variants)

paloaltonetworks/prisma_sd-wan 6.3.1 - 6.3.6

Published May 13, 2026

Tracked Since May 14, 2026