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CVE-2026-0227

MEDIUMCVSS 6.6/10EPSS 0.67%

Last modified

CVE-2026-0227 is a medium-severity vulnerability rated 6.6/10 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

CVSS 3.1
7.5/10

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

CVSS 4.0
6.6/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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 Probability
0.67%

47.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PaloaltonetworksPan-Os>= 10.1.0, < 10.1.14
PaloaltonetworksPan-Os>= 10.2.0, < 10.2.7
PaloaltonetworksPan-Os>= 10.2.8, < 10.2.10
PaloaltonetworksPan-Os>= 10.2.11, < 10.2.13
PaloaltonetworksPan-Os>= 10.2.14, < 10.2.16
PaloaltonetworksPan-Os>= 11.1.0, < 11.1.4
PaloaltonetworksPan-Os>= 11.1.5, < 11.1.6
PaloaltonetworksPan-Os>= 11.1.7, < 11.1.10
PaloaltonetworksPan-Os>= 11.1.11, < 11.1.13
PaloaltonetworksPan-Os>= 11.2.0, < 11.2.4
PaloaltonetworksPan-Os>= 11.2.5, < 11.2.7
PaloaltonetworksPan-Os>= 11.2.8, < 11.2.10
PaloaltonetworksPan-Os10.1.14
PaloaltonetworksPan-Os10.2.7
PaloaltonetworksPan-Os10.2.10
PaloaltonetworksPan-Os10.2.13
PaloaltonetworksPan-Os10.2.16
PaloaltonetworksPan-Os10.2.17
PaloaltonetworksPan-Os10.2.18
PaloaltonetworksPan-Os11.1.4
PaloaltonetworksPan-Os11.1.6
PaloaltonetworksPan-Os11.1.10
PaloaltonetworksPan-Os11.2.4
PaloaltonetworksPan-Os11.2.7
PaloaltonetworksPan-Os11.2.10
PaloaltonetworksPan-Os12.1.2
PaloaltonetworksPan-Os12.1.3
PaloaltonetworksPrisma AccessAll versions

References

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 6.6/10 (MEDIUM 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.

Are you affected by CVE-2026-0227?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST