How severe is CVE-2026-0244?

CVE-2026-0244 has a CVSS 4.0 base score of 5.2, rated medium severity.

Is CVE-2026-0244 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-0244?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-0244 have an EU (EUVD) identifier?

Yes. CVE-2026-0244 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30095.

When was CVE-2026-0244 published?

CVE-2026-0244 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-0244

CVE-2026-0244 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: Medium (CVSS 4.0 base score 5.2)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30095
Weakness: CWE-295
Published: 2026-05-13
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-0244?: 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.
How severe is CVE-2026-0244?: CVE-2026-0244 has a CVSS 4.0 base score of 5.2, rated medium severity.
Is CVE-2026-0244 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-0244?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0244 have an EU (EUVD) identifier?: Yes. CVE-2026-0244 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30095.
When was CVE-2026-0244 published?: CVE-2026-0244 was published on 2026-05-13 and last updated on 2026-06-17.

References

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

Other CWE-295 (Improper Certificate Validation) vulnerabilities

CVE-2026-4370 — Critical (CVSS 10.0): A vulnerability was identified in Juju from version 3.2.0 until 3.6.19 and from version 4.0 until 4.0.4, where the…
CVE-2026-30836 — Critical (CVSS 10.0): Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6…
CVE-2025-68121 — Critical (CVSS 10.0): During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between…
CVE-2022-20703 — Critical (CVSS 10.0): Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker…
CVE-2021-1471 — Critical (CVSS 9.9): Multiple vulnerabilities in Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms…
CVE-2026-20184 — Critical (CVSS 9.8): A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed…

Browse all CWE-295 (Improper Certificate Validation) vulnerabilities →