Zint Barcode Generator prior 2.10.0 code1.c is_last_single_ascii buffer overflow
is_last_single_asciiof the file code1.c. Upgrading to version 2.10.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at sourceforge.net. The best possible mitigation is suggested to be upgrading to the latest version.