Cyber Resilience

CVE-2026-0243

Paloaltonetworks Prisma Sd-Wan 6.3.1 – 6.3.6

Published
13 May 2026
Modified
14 July 2026
Patch / advisory
View advisory
CVSS Score v4 4.9
Click a component to see what it means
Raw vectorCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:D/RE:M/U:Amber
EPSS Score 0.0017 7th percentile
Risk Priority 30 floored blend · peak EPSS

Summary

CVE-2026-0243 is a medium-severity Unchecked Input for Loop Condition (CWE-606) vulnerability in Paloaltonetworks Prisma Sd-Wan. Its CVSS base score is 4.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

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(s)
CWE-606

Related Threats

MITRE ATT&CK Enterprise Techniques

T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
attack.mitre.org →
T1499 Endpoint Denial of Service Impact
Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-0244Same product: Paloaltonetworks Ion 1200
CVE-2024-2551Same vendor: Paloaltonetworks
CVE-2024-2550Same vendor: Paloaltonetworks
CVE-2026-0287Same vendor: Paloaltonetworks
CVE-2026-0227Same vendor: Paloaltonetworks
CVE-2026-0269Same vendor: Paloaltonetworks
CVE-2026-0241Same vendor: Paloaltonetworks
CVE-2025-0130Same vendor: Paloaltonetworks
CVE-2024-3393Same vendor: Paloaltonetworks
CVE-2025-43801Shared CWE-606

Affected Assets

paloaltonetworks
prisma sd-wan
6.3.6, 6.4.3, 6.5.3 · 6.3.1 — 6.3.6 · 6.4.1 — 6.4.3 · 6.5.1 — 6.5.3

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V17.3.2
  • V4.3.1

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly stops untrusted values from reaching loop conditions without bounds or sanity checks.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and bounds checking that prevent unchecked loop conditions.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect and block unchecked loop conditions before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle requires input validation and bounds checking that can prevent unchecked loop conditions.

A.8.26 Application security requirements partial match
prevents

Application security requirements include input validation rules that mitigate excessive looping from untrusted data.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly mandate validation of loop-control inputs to prevent unbounded iteration.

References