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Vulnerabilities

Vulnerability · 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 configu

Published Feb 11, 2026 · catalog updated Feb 11, 2026 · Palo Alto Networks PAN-OS

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-0228. EPSS is 0.20%. Act only if a listed version of Palo Alto Networks PAN-OS is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low1.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.20%
Remediation
Version ranges on file
Affected products
vendor Palo Alto Networks PAN-OS 11.2.0 <11.2.8

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Palo Alto Networks PAN-OS 11.2.0 <11.2.811.2.0 <11.2.8

How to fix CVE-2026-0228

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-0228. EPSS is 0.20%. Act only if a listed version of Palo Alto Networks PAN-OS is installed.

Which versions are affected?

Compare what you have installed with Palo Alto Networks PAN-OS 11.2.0 <11.2.8 11.2.0 <11.2.8. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.20%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Palo Alto PAN-OS securityWindows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 11, 2026 · EUVD

    Detected

    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.

  2. Feb 11, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-0228

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-0228

    30-day exploitation probability 0.20%

    first.org
  • EUVDVulnerability recordEUVD-2026-5939

    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.

    euvd.enisa.europa.eu
  • urlscan.ioThreat intelligenceCVE-2026-0228
    urlscan.io

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • urlscan.ioNov 7, 2026
  • FIRST EPSSNov 7, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 3, 2026