Expired certificate acceptance in PAN-OS Terminal Server Agent connection validation
An improper certificate validation issue in Palo Alto Networks PAN-OS allows Windows Terminal Server Agents to connect to PAN-OS using expired certificates, even when the PAN-OS configuration would normally reject such connections. This represents a failure to correctly enforce certificate validity period checks during agent authentication/connection establishment, enabling acceptance of certificates that should be considered invalid due to expiration.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.