Vulnerabilities in DrayTek VigorSwitch

DrayTek has addressed several vulnerabilities in the VigorSwitch product line. These vulnerabilities primarily involve command injection, buffer overflows, null pointer dereferencing, directory traversal, and insufficient authorization checks in various functions of the DrayTek VigorSwitch device...

CVE-2026-71943

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the setDevNet function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execut...

CVE-2026-71939

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the aclgeneralsetup Add ACE function. The vulnerability is caused by copying the name field into a fixed-size buffer without length validation. A remote attacker can trigger this vulnerability via crafted input, causin...

CVE-2026-71942

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the mailmailalert function. The vulnerability is caused by concatenating multiple smtpReceiver email addresses into a fixed-size buffer without checking the remaining buffer size. A remote attacker can trigger this...

CVE-2026-71940

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the aclgeneralsetup Edit ACE function. The vulnerability is caused by copying the name field into a fixed-size buffer without length validation. A remote attacker can trigger this vulnerability via crafted input, causi...

CVE-2026-71938

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the switchlangvrp function. The vulnerability is caused by unsafe copying of the portList field into an undersized buffer. A remote attacker can trigger this vulnerability via crafted input, causing a denial of service...

CVE-2026-71941

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the diaglogmail function. The vulnerability is caused by concatenating multiple smtpReceiver email addresses into a fixed-size buffer without checking the remaining buffer size. A remote attacker can trigger this...

CVE-2026-71936

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the sysreboot function. The vulnerability is caused by unsafe concatenation of split valueN data into a fixed-size buffer. A remote attacker can trigger this vulnerability via crafted input, causing a denial of service...

CVE-2026-71935

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the webBackupAction function. The vulnerability is caused by repeated string concatenation of the pathN, valueN, key, and option fields into fixed-size stack buffers without total length checks. A remote attacker can...

CVE-2026-71933

Multiple DrayTek VigorSwitch models contain unauthorized operation vulnerabilities in multiple syslog functions. The vulnerability is caused by missing authorization checks. A remote attacker can trigger these vulnerabilities via crafted requests to modify configuration, restart services, save...

CVE-2026-71934

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the pingtrace function. The vulnerability is caused by missing length checks when the host, count, and interval fields are concatenated into a fixed-size buffer. A remote attacker can trigger this vulnerability via...

CVE-2026-71937

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the poescheduleprofile function. The vulnerability is caused by repeated concatenation of the startdate, starttime, durationtime, howoften, weekdays, monthlydate, and cycleduration fields into small fixed-size buffers...

CVE-2026-71931

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the tftpupgrade function. The vulnerability is caused by insufficient filtering before the filename field is concatenated into a command. A remote attacker can trigger this vulnerability via crafted input to execute...

CVE-2026-71932

Multiple DrayTek VigorSwitch models contain a directory traversal vulnerability in the getSyslogFile function. The vulnerability is caused by insufficient validation of the option field. A remote attacker can trigger this vulnerability via crafted input containing path traversal sequences to acce...

CVE-2026-71927

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the rebDevice function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execut...

CVE-2026-71928

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the fdftDevice function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execu...

CVE-2026-71929

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the setDevProto function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to...

CVE-2026-71930

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the setTime function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute...

CVE-2026-71921

Multiple DrayTek VigorSwitch models contain a pre-authentication command injection vulnerability in the setget.cgi interface. The vulnerability is caused by insufficient filtering of the pass field before command execution. A remote attacker can trigger this vulnerability via crafted input to...

CVE-2026-71924

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the getVid function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute...