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CVE-2026-0244

📛 CVE 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.

Overview

State
PUBLISHED
Assigner (CNA)
palo_alto
CVSS severity
MEDIUM
CVSS score
CVSS 5.2 / 10 5.2 5.2 / 10
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
Effective score
5.2 / 10 MEDIUM source: CNA overview
CWE(s)
CWE-295
Reserved
2025-11-03
Published
2026-05-13 19:03 UTC
Last updated
2026-05-13 19:29 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/0xxx/CVE-2026-0244.json
Linked Threat
CVE-2026-0244 — Prisma SD-WAN: Improper Certificate Validation Vulnerability

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-05-13 19:16:58 UTC
NVD last modified
2026-05-14 16:21:23 UTC
EPSS score
0.0001 (probability of exploitation in next 30 days)
EPSS percentile
0.38% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD / KEV / EPSS data refreshed 2026-05-25 04:49 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-30095
Assigner
palo_alto
Published
May 13, 2026, 7:03:09 PM
Updated
May 13, 2026, 7:29:53 PM
EUVD base score (CVSS 4.0)
5.2 / 10
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
EUVD-reported EPSS
0.0100
Vendors
Palo Alto Networks
Products
Prisma SD-WAN ION (6.3.0 <6.3.6-b10)
Prisma SD-WAN ION (6.5.0 <6.5.3-b15)
Prisma SD-WAN ION
Prisma SD-WAN ION (6.4.0 <6.4.3-b8)

ENISA 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.

EUVD references (1)

Affected products (1)

VendorProductVersionsPlatforms
Palo Alto Networks Prisma SD-WAN ION 6.5.0 (affected), 6.4.0 (affected), 6.3.0 (affected), 6.1.0 (unaffected), 5.6.0 (unaffected)

Vendor references (1)

References embedded in the original CVE record by the assigning CNA.

Web references (4)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (1)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Indicators (1)

IOCs linked to the auto-promoted Threat row.

TypeValueVirusTotalAttached
cve CVE-2026-0244 no local data 2026-05-14 09:33 UTC

Flagged vendors

    Remediations (15)

    Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

    • web:blog.qualys.com

      With Qualys Policy Audit's out-of-the-box mitigation or Compensatory Controls, which reduce the risk of a vulnerability being exploited because the remediation ( fix / patch ) cannot be done immediately, these security controls are not recommended by any industry standards, such as CIS and DISA-STIG.

      2026-05-23 21:34 UTC
    • web:cybersecuritynews.com

      Microsoft has released its April 2026 Patch Tuesday security update, addressing 168 vulnerabilities across its product portfolio including one actively exploited zero-day and one publicly disclosed flaw that organizations must prioritize immediately.

      2026-05-23 21:34 UTC
    • web:krebsonsecurity.com

      For a clickable, per- patch breakdown, check out the SANS Internet Storm Center Patch Tuesday roundup. Running into problems applying any of these updates?

      2026-05-23 21:34 UTC
    • web:portal.msrc.microsoft.com

      The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

      2026-05-23 21:34 UTC
    • web:support.apple.com

      This document describes the security content of iOS 26.4 and iPadOS 26.4.

      2026-05-23 21:34 UTC
    • web:support.sap.com

      SAP security Patch Day Bulletin

      2026-05-23 21:34 UTC
    • web:www.crowdstrike.com

      Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

      2026-05-23 21:34 UTC
    • web:www.oracle.com

      This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

      2026-05-23 21:34 UTC
    • web:www.windowslatest.com

      Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.

      2026-05-23 21:34 UTC
    • web:zecurit.com

      Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

      2026-05-23 21:34 UTC
    • web:blog.qualys.com

      Oracle released its second quarterly edition of this year's Critical Patch Update. The update received patches for 481 security vulnerabilities.

      2026-05-17 02:54 UTC
    • web:blogs.oracle.com

      For more information about the Critical Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.

      2026-05-17 02:54 UTC
    • web:cybersecuritynews.com

      Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

      2026-05-17 02:54 UTC
    • web:windowsreport.com

      Microsoft has released its May 2026 Patch Tuesday updates for Windows 11 and Windows 10, shipping as KB5089549 and KB5087544. The updates include fixes for more than 130 security vulnerabilities across Windows, Office, SharePoint, DNS components, and core system services, as Bleeping Computer writes. While no publicly disclosed zero-day vulnerabilities were reported this month, the […]

      2026-05-17 02:54 UTC
    • web:www.oracle.com

      Oracle Critical Patch Update Advisory - January 2026 Description A Critical Patch Update is a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities in Oracle code and in third party components included in Oracle products. These patches are usually cumulative, but each advisory describes only the security patches added since the previous Critical ...

      2026-05-17 02:54 UTC

    AI Forensic Analysis

    Only Available for Registered Users. Sign in to view.

    Raw JSON

    The full cvelistV5 record. Download as CVE-2026-0244.json.

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