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Vulnerabilities

Vulnerability · CVE-2026-0243

A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN IO…

Published May 13, 2026 · catalog updated Jul 14, 2026 · prisma sd-wan

Check if you run it

No confirmed exploitation is on record for CVE-2026-0243. EPSS is 0.17%. Act only if a listed version of prisma sd-wan is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.17%
Remediation
Advisory link
Affected products
cpe paloaltonetworks/prisma sd-wan

A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to cause a system disruption by sending a specially crafted IPv6 packet.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe paloaltonetworks/prisma sd-wan6.3.6
  • cpe paloaltonetworks/prisma sd-wan6.4.3

How to fix CVE-2026-0243

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-0243. EPSS is 0.17%. Act only if a listed version of prisma sd-wan is installed.

Which versions are affected?

Compare what you have installed with paloaltonetworks/prisma sd-wan 6.3.6; paloaltonetworks/prisma sd-wan 6.4.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-606. EPSS 0.17%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 13, 2026 · NIST NVD

    Detected

    A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to cause a system disruption by sending a specially crafted IPv6 packet.

  2. Jul 14, 2026 · NIST NVD

    Updated

    A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to cause a system disruption by sending a specially crafted IPv6 packet.

Sources

  • CVE.orgVulnerability recordCVE-2026-0243

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-0243

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-0243

    A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to cause a system disruption by sending a specially crafted IPv6 packet.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.