CVE-2026-19815: high-severity vulnerability in TOTOLINK A800R
TOTOLINK A800R firewall.so cstecgi.cgi setParentalRules stack-based overflow
Published
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.7epss 0.9%
exploitation probability
0.9%top 43% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A flaw has been found in TOTOLINK A800R 4.1.2cu.5137_B20200730. Affected by this vulnerability is the function setParentalRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. Executing a manipulation of the argument urlKeyword can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
TOTOLINK · A800Rpublic PoCs found — 1
cve_referencegithub.com/panda666-888/vuls/blob/main/totolink/a800r/setParentalRules.mdunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — TOTOLINK A800R
In the same product, most dangerous first.
CVE-2025-4496HIGHTOTOLINK T10/A3100R/A950RG/A800R/N600R/A3000RU/A810R cstecgi.cgi CloudACMunualUpdate buffer overflowEPSS 1.2%CVE-2026-19847HIGHTOTOLINK A800R wps.so cstecgi.cgi setWiFiWpsConfig stack-based overflowEPSS 0.9%CVE-2026-19846HIGHTOTOLINK A800R firewall.so cstecgi.cgi setUrlFilterRules stack-based overflowEPSS 0.9%CVE-2026-19845HIGHTOTOLINK A800R lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflowEPSS 0.9%CVE-2026-19844HIGHTOTOLINK A800R ipv6.so cstecgi.cgi setRadvdCfg stack-based overflowEPSS 0.9%CVE-2026-19814HIGHTOTOLINK A800R firewall.so cstecgi.cgi setMacQos stack-based overflowEPSS 0.9%