By overlong input values an attacker may force overwrite of the internal program stack in SAP Web Dispatcher - versions 7.53 7.77 7.81 7.85 7.86 or Internet Communication Manager - versions KRNL64NUC 7.22 7.22EXT 7.49 KRNL64UC 7.22 7.22EXT 7.49 7.53 KERNEL 7.22 7.49 7.53 7.77 7.81 7.85 7.86 which makes these programs unavailable leading to denial of service.