Is CVE-2026-0243 in the CISA KEV catalog?

No. CVE-2026-0243 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-0243?

CVE-2026-0243 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-0243?

CVE-2026-0243 has an EPSS score of 0.17% (7th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-0243?

Upgrade prisma sd-wan to 6.3.6 or later.

CVE & CISA-KEV Catalog

CVE-2026-0243

MEDIUM

6.5

CVSS v3

NVD

Description

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.

CWE-606

How to fix

Remediation Available

prisma sd-wanNVD

Affected:>= 6.3.1, < 6.3.6Fixed in:6.3.6CVE-2026-0243derived from NVD

Affected:>= 6.5.1, < 6.5.3Fixed in:6.5.3CVE-2026-0243derived from NVD

Affected:>= 6.4.1, < 6.4.3Fixed in:6.4.3CVE-2026-0243derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.17%probability of exploitation in 30 days

7thpercentile

Low risk: more likely to be exploited than 7% of all known CVEs.

References

Vendor Advisory1

security.paloaltonetworks.com

Related Vulnerabilities

Other CWE-606 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-3446	Medium	5.3	6.5%	-	Fix
CVE-2023-5678	Medium	5.3	4.5%	-	Fix
CVE-2023-3817	Medium	5.3	2.6%	-	Fix
CVE-2024-43499	High	7.5	2.6%	-	Fix
CVE-2023-6237	Medium	5.9	2.3%	-	Fix
CVE-2026-1519	High	7.5	1.5%	-	Fix

Embed a live status badge for CVE-2026-0243

Markdown

[![CVE-2026-0243](https://tridentstack.com/cve/badge/CVE-2026-0243.svg)](https://tridentstack.com/cve/CVE-2026-0243)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-0243"><img src="https://tridentstack.com/cve/badge/CVE-2026-0243.svg" alt="CVE-2026-0243"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-14.