Improper Certificate Validation in PAN-OS by Palo Alto Networks
CVE-2026-0228

1.3LOW

Key Information:

Vendor

Palo Alto Networks
Status
Cloud Ngfw
Pan-os
Prisma Access
Vendor
CVE Published:
11 February 2026

Badges

👾 Exploit Exists

What is CVE-2026-0228?

An improper certificate validation vulnerability in PAN-OS permits users to connect Terminal Server Agents on Windows using expired certificates, bypassing the intended restrictions of the PAN-OS configuration. This vulnerability poses a significant risk as it may allow unauthorized access to secure resources, undermining the overall security framework designed to protect network communications.

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Affected Version(s)

PAN-OS 11.2.0 < 11.2.8

PAN-OS 11.1.0 < 11.1.11

PAN-OS 10.2.0 < 10.2.17

References

https://security.paloaltonetworks.com/CVE-2026-0228
vendor-advisory

CVSS V4

Score:
1.3
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Paolo Nero of Wellcomm Engineering
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