How severe is CVE-2026-0243?

CVE-2026-0243 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-0243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0243?

CVE-2026-0243 primarily affects Paloaltonetworks Prisma Sd-wan. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-0243?

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

Does CVE-2026-0243 have an EU (EUVD) identifier?

Yes. CVE-2026-0243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30135.

When was CVE-2026-0243 published?

CVE-2026-0243 was published on 2026-05-13 and last updated on 2026-07-14.

CVE-2026-0243

CVE-2026-0243 is a medium-severity vulnerability in Paloaltonetworks Prisma Sd-wan with a CVSS 3.x base score of 6.5. 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-606.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 4.9
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30135
Weakness: CWE-606
Affected product: Paloaltonetworks Prisma Sd-wan
Published: 2026-05-13
Last modified: 2026-07-14

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.

Frequently asked questions

What is 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 ION device to cause a system disruption by sending a specially crafted IPv6 packet.
How severe is CVE-2026-0243?: CVE-2026-0243 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-0243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0243?: CVE-2026-0243 primarily affects Paloaltonetworks Prisma Sd-wan. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-0243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0243 have an EU (EUVD) identifier?: Yes. CVE-2026-0243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30135.
When was CVE-2026-0243 published?: CVE-2026-0243 was published on 2026-05-13 and last updated on 2026-07-14.

References

https://security.paloaltonetworks.com/CVE-2026-0243

Affected products (9)

cpe:2.3:a:paloaltonetworks:prisma_sd-wan:*:*:*:*:*:*:*:*
cpe:2.3:a:paloaltonetworks:prisma_sd-wan:6.3.6:-:*:*:*:*:*:*
cpe:2.3:a:paloaltonetworks:prisma_sd-wan:6.3.6:b6:*:*:*:*:*:*
cpe:2.3:a:paloaltonetworks:prisma_sd-wan:6.3.6:b9:*:*:*:*:*:*
cpe:2.3:a:paloaltonetworks:prisma_sd-wan:6.4.3:-:*:*:*:*:*:*
cpe:2.3:a:paloaltonetworks:prisma_sd-wan:6.4.3:b6:*:*:*:*:*:*
cpe:2.3:a:paloaltonetworks:prisma_sd-wan:6.5.3:-:*:*:*:*:*:*
cpe:2.3:a:paloaltonetworks:prisma_sd-wan:6.5.3:b9:*:*:*:*:*:*
cpe:2.3:a:paloaltonetworks:prisma_sd-wan:6.5.3:i-b10:*:*:*:*:*:*

More vulnerabilities in Paloaltonetworks Prisma Sd-wan

CVE-2026-0244 — High (CVSS 8.1): An improper certificate validation vulnerability in the Palo Alto Networks Prisma SD-WAN ION enables man-in-the-middle…

All CVEs affecting Paloaltonetworks Prisma Sd-wan →

Other CWE-606 vulnerabilities

CVE-2026-20301 — High (CVSS 8.6): A vulnerability in the Extensible Messaging Client Protocol (XMCP), also referred to as the External Client protocol,…
CVE-2026-27689 — High (CVSS 7.7): Due to an uncontrolled resource consumption (Denial of Service) vulnerability, an authenticated attacker with regular…
CVE-2026-62901 — High (CVSS 7.5): Unchecked input for loop condition in .NET allows an unauthorized attacker to deny service over a network.
CVE-2026-1519 — High (CVSS 7.5): If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume…
CVE-2025-43801 — High (CVSS 7.5): Unchecked input for loop condition vulnerability in XML-RPC in Liferay Portal 7.4.0 through 7.4.3.111, and older…
CVE-2024-34486 — High (CVSS 7.5): OFPPacketQueue in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service (infinite loop) via…

Browse all CWE-606 vulnerabilities →