Palo Alto Prisma SD-WAN ION up to 25.3.2 unchecked input for loop condition

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Palo Alto Prisma SD-WAN ION up to 5.5.x/6.0.x/24.3.5/25.1.7/25.3.2. Affected by this issue is some unknown functionality. Such manipulation leads to unchecked input for loop condition. This vulnerability is documented as CVE-2026-0243. The attack requires being on the local network. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Palo Alto Prisma SD-WAN ION up to 5.5.x/6.0.x/24.3.5/25.1.7/25.3.2. It has been rated as critical. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a unchecked input for loop condition vulnerability. Using CWE to declare the problem leads to CWE-606. The product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping. Impacted is availability. CVE summarizes:

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.

The advisory is shared for download at security.paloaltonetworks.com. This vulnerability is handled as CVE-2026-0243 since 11/03/2025. The exploitation is known to be easy. The attack needs to be done within the local network. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1449.

Upgrading to version 5.6.0, 6.1.0, 24.3.6, 25.1.8 or 25.3.3 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Unchecked input for loop condition
CWE: CWE-606 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Prisma SD-WAN ION 5.6.0/6.1.0/24.3.6/25.1.8/25.3.3

Timelineinfo

11/03/2025 CVE reserved
05/14/2026 +191 days Advisory disclosed
05/14/2026 +0 days VulDB entry created
07/17/2026 +64 days VulDB entry last update

Sourcesinfo

Vendor: paloaltonetworks.com

Advisory: security.paloaltonetworks.com
Status: Confirmed

CVE: CVE-2026-0243 (🔒)
GCVE (CVE): GCVE-0-2026-0243
GCVE (VulDB): GCVE-100-363716

Entryinfo

Created: 05/14/2026 05:22
Updated: 07/17/2026 14:23
Changes: 05/14/2026 05:22 (72), 07/17/2026 14:23 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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