Nokia Mobile released November security patch for Nokia 5.3 and the current best G series phone, Nokia G50.
The update for G50 is available here in EU, but should be picked up elsewhere. The size of the update is 37.50 MB, so not a biggie to download over Wi-Fi.
The update for Nokia 5.3 is available in Saudi Arabia but do check if it is showing on devices around the globe. The update size should be 26.51 MB.
Thanks to Andrew Stephan for the tip and screenshot.