Disclaimer

Known affected versions were inferred from fixed-version data and were not explicitly confirmed by the vendor: 12.1.4-h3

The earliest recollection of this bug is traced back to PAN-OS 12.1.5 - August 14, 2026. This bug is fixed in PAN-OS versions 12.1.5. Fixed an issue where the firewall rebooted unexpectedly due to a missed null pointer check when certification verification was enabled in a no-decrypt case. This occurred when either block sessions with untrusted issuers or block sessions with expired certificates was enabled in the decryption profile. For more information: https://docs.paloaltonetworks.com/ngfw/release-notes/12-1/pan-os-12-1-5-known-and-addressed-issues/pan-os-12-1-5-addressed-issues