Buffer overflows, format string bugs.
vulners.com/securityvulns/securityvulns:doc:3320
vulners.com/securityvulns/securityvulns:doc:3321
vulners.com/securityvulns/securityvulns:doc:3509
vulners.com/securityvulns/securityvulns:doc:3510
vulners.com/securityvulns/securityvulns:doc:3516
vulners.com/securityvulns/securityvulns:doc:3519
vulners.com/securityvulns/securityvulns:doc:3520
vulners.com/securityvulns/securityvulns:doc:3521
vulners.com/securityvulns/securityvulns:doc:3526
vulners.com/securityvulns/securityvulns:doc:5824
vulners.com/securityvulns/securityvulns:doc:6762
vulners.com/securityvulns/securityvulns:doc:8019