CVE-2026-19813: high-severity vulnerability in TOTOLINK A800R
TOTOLINK A800R firewall.so cstecgi.cgi setMacFilterRules stack-based overflow
Published · Updated
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 security vulnerability has been detected in TOTOLINK A800R 4.1.2cu.5137_B20200730. This impacts the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. Such manipulation of the argument Comment leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly 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/setMacFilterRules.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.
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