How severe is CVE-2026-0227?

CVE-2026-0227 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-0227 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0227?

CVE-2026-0227 primarily affects Paloaltonetworks Pan-os. In total, 108 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-0227?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-0227 have an EU (EUVD) identifier?

Yes. CVE-2026-0227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2715.

When was CVE-2026-0227 published?

CVE-2026-0227 was published on 2026-01-15 and last updated on 2026-06-17.

CVE-2026-0227

CVE-2026-0227 is a high-severity vulnerability in Paloaltonetworks Pan-os with a CVSS 3.x base score of 7.5. 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-754.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 6.6
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2715
Weakness: CWE-754
Affected product: Paloaltonetworks Pan-os
Published: 2026-01-15
Last modified: 2026-06-17

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.

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 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-0227 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0227?: CVE-2026-0227 primarily affects Paloaltonetworks Pan-os. In total, 108 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-0227?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-0227 have an EU (EUVD) identifier?: Yes. CVE-2026-0227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2715.
When was CVE-2026-0227 published?: CVE-2026-0227 was published on 2026-01-15 and last updated on 2026-06-17.

References

https://security.paloaltonetworks.com/CVE-2026-0227

Affected products (108)

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:-:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h10:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h11:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h13:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h14:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h15:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h16:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h19:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h2:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h4:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h6:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h8:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h9:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:-:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h1:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h12:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h16:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h18:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h19:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h21:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h24:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h3:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h6:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.7:h8:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:-:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h10:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h12:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h14:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h17:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h18:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h2:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h21:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h27:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h3:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h4:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h5:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h7:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.10:h9:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.2.13:-:*:*:*:*:*:*

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