Ex1200L
Monthly
Stack-based buffer overflow in the Totolink EX1200L router's login handler (cgi-bin/cstecgi.cgi) allows remote attackers on the adjacent network to crash the device or execute arbitrary code as root. Confirmed on firmware 9.3.5u.6146_B20201023 with no public exploit identified at time of analysis, but vendor contact attempts by CERT-PL were unsuccessful so no patch is available. CVSS 4.0 of 9.4 reflects unauthenticated exploitation with full impact on both the device and downstream systems.
Denial-of-service in TOTOLINK EX1200L firmware 9.3.5u.6146_B20201023 allows authenticated remote attackers to crash the device by sending a crafted request to the setWizardCfg function in /cgi-bin/cstecgi.cgi, triggering a null pointer dereference. Impact is limited strictly to availability - no confidentiality or integrity compromise - but a publicly available proof-of-concept exploit on GitHub (CVSS 4.0 E:P) significantly lowers the exploitation barrier. No vendor patch has been identified and the device is not listed in CISA KEV, making access restriction to the management interface the primary mitigation.
Remote denial-of-service in TOTOLINK EX1200L firmware 9.3.5u.6146_B20201023 allows a low-privileged authenticated attacker to crash the device by submitting a malformed request to the setPasswordCfg function in the CGI-based web management interface. Exploitation triggers a null pointer dereference in /cgi-bin/cstecgi.cgi, rendering the device unresponsive and disrupting its network extension services entirely. A public proof-of-concept exploit exists on GitHub, lowering the bar for exploitation, though no active exploitation has been recorded in CISA KEV at time of analysis.
Stack-based buffer overflow in the Totolink EX1200L router's login handler (cgi-bin/cstecgi.cgi) allows remote attackers on the adjacent network to crash the device or execute arbitrary code as root. Confirmed on firmware 9.3.5u.6146_B20201023 with no public exploit identified at time of analysis, but vendor contact attempts by CERT-PL were unsuccessful so no patch is available. CVSS 4.0 of 9.4 reflects unauthenticated exploitation with full impact on both the device and downstream systems.
Denial-of-service in TOTOLINK EX1200L firmware 9.3.5u.6146_B20201023 allows authenticated remote attackers to crash the device by sending a crafted request to the setWizardCfg function in /cgi-bin/cstecgi.cgi, triggering a null pointer dereference. Impact is limited strictly to availability - no confidentiality or integrity compromise - but a publicly available proof-of-concept exploit on GitHub (CVSS 4.0 E:P) significantly lowers the exploitation barrier. No vendor patch has been identified and the device is not listed in CISA KEV, making access restriction to the management interface the primary mitigation.
Remote denial-of-service in TOTOLINK EX1200L firmware 9.3.5u.6146_B20201023 allows a low-privileged authenticated attacker to crash the device by submitting a malformed request to the setPasswordCfg function in the CGI-based web management interface. Exploitation triggers a null pointer dereference in /cgi-bin/cstecgi.cgi, rendering the device unresponsive and disrupting its network extension services entirely. A public proof-of-concept exploit exists on GitHub, lowering the bar for exploitation, though no active exploitation has been recorded in CISA KEV at time of analysis.