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    CVE-2026-0228

    An improper certificate validation vulnerability in PAN-OS allows users to connect Terminal Server Agents on Windows to PAN-OS using expired certificates even if the PAN-OS configuration would not normally permit them to do so.

    Published:Feb 11, 2026
    Last Modified:Apr 18, 2026
    EPS:Feb 11, 2026
    EPSS Score:0.00011
    CVSS Score:1.3

    Affected Products

    Vendor
    Palo Alto Networks
    Product
    Cloud Ngfw
    Vendor
    Palo Alto Networks
    Product
    Pan-os
    Vendor
    Palo Alto Networks
    Product
    Prisma Access

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

    Related CVEs

    CVE-2026-0310 (CVSS 7.2) — A buffer overflow vulnerability in the XML processing functionality of Palo Alto Networks PAN-OS® software ena…
    CVE-2026-0301 (CVSS 1.7) — An information disclosure vulnerability in the URL Filtering feature of Palo Alto Networks PAN-OS® software en…
    CVE-2026-0279 (CVSS 1.3) — Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) servi…
    CVE-2026-0280 (CVSS 1.7) — An IPv6 packet processing vulnerability in the dataplane of Palo Alto Networks PAN-OS® software enables an una…
    CVE-2026-0281 (CVSS 2.1) — An information disclosure vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated atta…
    CVE-2026-0282 (CVSS 2.7) — A file deletion vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with …
    CVE-2026-0283 (CVSS 4.5) — An authentication bypass vulnerability in Large Scale VPN ( LSVPN) functionality of Palo Alto Networks PAN-OS …
    CVE-2026-0284 (CVSS 4.7) — An XML injection vulnerability in the Large Scale VPN (LSVPN) functionality of Palo Alto Networks PAN-OS® soft…
    CVE-2026-0285 (CVSS 4.7) — A server-side request forgery (SSRF) vulnerability in Palo Alto Networks PAN-OS software enables an authentica…
    CVE-2026-0286 (CVSS 6) — A command injection vulnerability in the management plane of Palo Alto Networks PAN-OS® software enables an au…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High