D-Link DIR-842 fw_revA_1-02_eu_multi_20151008 was discovered to contain multiple buffer overflows in the fgets function via the acStack_120 and acStack_220 parameters.
https://www.dlink.com/en/security-bulletin/
https://github.com/Davidteeri/Bug-Report/blob/main/D-Link/DIR-842%20buffer%20overflow.md