Vulnerability · Published May 13, 2026 · Assigned by palo_alto
CVE-2026-0244Prisma SD-WAN: Improper Certificate Validation Vulnerability
Medium 5.2
In plain English
A medium-severity improper certificate validation in Prisma SD-WAN ION from Palo Alto Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Severity (CVSS 4.0)5.2Medium
Exploit odds (30 days)0.2%top 87.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Palo Alto Networks | Prisma SD-WAN ION | 6.5.0 – before 6.5.3-b156.4.0 – before 6.4.3-b86.3.0 – before 6.3.6-b10 |
Weakness: CWE-295 · 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
References
- https://security.paloaltonetworks.com/CVE-2026-0244 vendor-advisory