CVE-2026-0227
HIGHCVSS 7.5/10EPSS 0.67%
Last modified
CVE-2026-0227 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.. EPSS estimates a 0.67% chance of exploitation in the next 30 days.
Description
A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Paloaltonetworks | Pan-Os | >= 10.1.0, < 10.1.14 |
| Paloaltonetworks | Pan-Os | >= 10.2.0, < 10.2.7 |
| Paloaltonetworks | Pan-Os | >= 10.2.8, < 10.2.10 |
| Paloaltonetworks | Pan-Os | >= 10.2.11, < 10.2.13 |
| Paloaltonetworks | Pan-Os | >= 10.2.14, < 10.2.16 |
| Paloaltonetworks | Pan-Os | >= 11.1.0, < 11.1.4 |
| Paloaltonetworks | Pan-Os | >= 11.1.5, < 11.1.6 |
| Paloaltonetworks | Pan-Os | >= 11.1.7, < 11.1.10 |
| Paloaltonetworks | Pan-Os | >= 11.1.11, < 11.1.13 |
| Paloaltonetworks | Pan-Os | >= 11.2.0, < 11.2.4 |
| Paloaltonetworks | Pan-Os | >= 11.2.5, < 11.2.7 |
| Paloaltonetworks | Pan-Os | >= 11.2.8, < 11.2.10 |
| Paloaltonetworks | Pan-Os | 10.1.14 |
| Paloaltonetworks | Pan-Os | 10.2.7 |
| Paloaltonetworks | Pan-Os | 10.2.10 |
| Paloaltonetworks | Pan-Os | 10.2.13 |
| Paloaltonetworks | Pan-Os | 10.2.16 |
| Paloaltonetworks | Pan-Os | 10.2.17 |
| Paloaltonetworks | Pan-Os | 10.2.18 |
| Paloaltonetworks | Pan-Os | 11.1.4 |
| Paloaltonetworks | Pan-Os | 11.1.6 |
| Paloaltonetworks | Pan-Os | 11.1.10 |
| Paloaltonetworks | Pan-Os | 11.2.4 |
| Paloaltonetworks | Pan-Os | 11.2.7 |
| Paloaltonetworks | Pan-Os | 11.2.10 |
| Paloaltonetworks | Pan-Os | 12.1.2 |
| Paloaltonetworks | Pan-Os | 12.1.3 |
| Paloaltonetworks | Prisma Access | All versions |
References
- https://security.paloaltonetworks.com/CVE-2026-0227Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-0227?
A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.
How severe is CVE-2026-0227?
CVE-2026-0227 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.
How do I fix CVE-2026-0227?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-0227?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST