{"id":"CVE-2026-0244","state":"PUBLISHED","title":"Prisma SD-WAN: Improper Certificate Validation Vulnerability","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.","publishedAt":"2026-05-13T19:03:09.013Z","updatedAt":"2026-05-13T19:29:53.580Z","severity":{"score":5.2,"label":"Medium","version":"4.0","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","source":"palo_alto"},"assigner":"palo_alto","products":["Palo Alto Networks Prisma SD-WAN ION"],"affected":[{"vendor":"Palo Alto Networks","product":"Prisma SD-WAN 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be affected by this issue.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>No special configuration is required to be affected by this issue.</p>"}]}],"workarounds":[{"lang":"eng","value":"No known workarounds exist for this issue.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>No known workarounds exist for this issue.</p>"}]}],"solutions":[{"lang":"eng","value":"Version  Minor Version  Suggested Solution\nPrisma SD-WAN ION 6.5  6.5.1 through 6.5.3  Upgrade to 6.5.3-b15 or later.\nPrisma SD-WAN ION 6.4  6.4.1 through 6.4.3  Upgrade to 6.4.3-b8 or later.\nPrisma SD-WAN ION 6.3  6.3.1 through 6.3.6  Upgrade to 6.3.6-b10 or later.\nPrisma SD-WAN ION 6.1    No action needed.\nPrisma SD-WAN ION 5.6    No action needed.","supportingMedia":[{"type":"text/html","base64":false,"value":"<table class=\"tbl\"><tr><td>Version</td><td>Minor Version</td><td>Suggested Solution</td></tr><tr><td>Prisma SD-WAN ION 6.5</td><td>6.5.1 through 6.5.3</td><td>Upgrade to 6.5.3-b15 or later.</td></tr><tr><td>Prisma SD-WAN ION 6.4</td><td>6.4.1 through 6.4.3</td><td>Upgrade to 6.4.3-b8 or later.</td></tr><tr><td>Prisma SD-WAN ION 6.3</td><td>6.3.1 through 6.3.6</td><td>Upgrade to 6.3.6-b10 or later.</td></tr><tr><td>Prisma SD-WAN ION 6.1</td><td><br></td><td>No action needed.</td></tr><tr><td>Prisma SD-WAN ION 5.6</td><td><br></td><td>No action needed.</td></tr></table>"}]}],"exploits":[{"lang":"en","value":"Palo Alto Networks is not aware of any malicious exploitation of this issue.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Palo Alto Networks is not aware of any malicious exploitation of this issue.</p>"}]}],"timeline":[{"time":"2026-05-13T16:00:00.000Z","lang":"en","value":"Initial publication."}],"credits":[{"lang":"en","value":"Palo Alto Networks thanks our internal security research teams for discovering and reporting this issue.","type":"other"}],"source":{"discovery":"INTERNAL"},"x_generator":{"engine":"Vulnogram 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