Low 1.3Published Feb 11, 2026

CVE-2026-0228PAN-OS: Improper Validation of Terminal Server Agent Certificate

Updated under an hour ago (Oct 26, 2026, 2:50 PM ET)

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It affects Palo Alto Networks Cloud NGFW and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 1.3 LOW (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Weakness (CWE): CWE-295
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: palo_alto
NVD analysis: Deferred
Record last updated: Feb 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Palo Alto Networks Cloud NGFW palo_alto_networks:cloud_ngfw (from the name)	all versions not affected	CNA record
Palo Alto Networks PAN-OS palo_alto_networks:pan-os	12.1.0 builds before 11.2.8 not affected; from 11.2.0 before 11.2.8; fixed at 11.2.8; from 11.1.0 before 11.1.11; fixed at 11.1.11; from 10.2.0 before 10.2.17; fixed at 10.2.17	CNA record
Palo Alto Networks Prisma Access palo_alto_networks:prisma_access (from the name)	from 10.2.0 before 10.2.10-h28; fixed at 11.2.7-h10, fixed at 10.2.10-h28	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.