Disclaimer

Hotfix versions were inferred because the vendor did not list them explicitly: 10.2.7-h1, 10.2.7-h2, 10.2.7-h3, 10.2.7-h4, 10.2.7-h5, 10.2.7-h6, 10.2.7-h7, 10.2.7-h8, 10.2.7-h9, 10.2.7-h10, 10.2.7-h11, 10.2.7-h12, 10.2.7-h13, 10.2.7-h14, 10.2.7-h15, 10.2.7-h16, 10.2.7-h17, 10.2.7-h18, 10.2.7-h19, 10.2.7-h20, 10.2.7-h21, 10.2.7-h22, 10.2.7-h23, 10.2.7-h24, 10.2.7-h25, 10.2.7-h26, 10.2.7-h27, 10.2.7-h28, 10.2.7-h29, 10.2.7-h30, 10.2.7-h31, 10.2.16-h1, 10.2.16-h2, 10.2.16-h3, 10.2.16-h4, 10.2.16-h5, 10.2.16-h6, 11.1.6-h1, 11.1.6-h2, 11.1.6-h3, 11.1.6-h4, 11.1.6-h5, 11.1.6-h6, 11.1.6-h7, 11.1.6-h8, 11.1.6-h9, 11.1.6-h10, 11.1.6-h11, 11.1.6-h12, 11.1.6-h13, 11.1.6-h14, 11.1.6-h15, 11.1.6-h16, 11.1.6-h17, 11.1.6-h18, 11.1.10-h1, 11.1.10-h2, 11.1.10-h3, 11.1.10-h4, 11.1.10-h6 Known affected versions were inferred from fixed-version data and were not explicitly confirmed by the vendor: 11.2.10-h13, 12.1.3

The earliest recollection of this bug is traced back to PAN-OS 10.2.16-h7 - October 20, 2026. This bug is fixed in PAN-OS versions 11.2.11, 10.2.7-h32, 10.2.16-h7, 12.1.4, 11.1.12, 10.2.17, 11.1.10-h7, 11.2.10, 11.1.14, 11.1.10-h5, 11.1.6-h19. Fixed an issue where TFTP file transfers intermittently timed out in active/active HA pairs when the TFTP control channel was processed by one firewall and the data channel was processed by the other. This occurred because the firewall receiving the data channel failed to match the predicted session due to asynchronous processing of HA messages. Fixed an issue where TFTP file transfers intermittently timed out in active-active HA pairs when the TFTP control channel was processed by one firewall and the data channel was processed by the other. This occurred because the firewall receiving the data channel failed to match the predicted session due to asynchronous processing of HA messages. For more information: https://docs.paloaltonetworks.com/ngfw/release-notes/12-1/pan-os-12-1-4-known-and-addressed-issues/pan-os-12-1-4-addressed-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-16-known-and-addressed-issues/pan-os-10-2-16-h7-addressed-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-17-known-and-addressed-issues/pan-os-10-2-17-addressed-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-7-known-and-addressed-issues/pan-os-10-2-7-h32-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-10-known-and-addressed-issues/pan-os-11-1-10-h5-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-10-known-and-addressed-issues/pan-os-11-1-10-h7-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-12-known-and-addressed-issues/pan-os-11-1-12-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-14-known-and-addressed-issues/pan-os-11-1-14-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-6-known-and-addressed-issues/pan-os-11-1-6-h19-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-10-known-and-addressed-issues/pan-os-11-2-10-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-11-known-and-addressed-issues/pan-os-11-2-11-addressed-issues