Description
A security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. The impacted element is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. The manipulation of the argument Comment results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| TOTOLINK | A800R | 4.1.2cu.5137_B20200730 | — |
References
- VDB-389947 | TOTOLINK A800R firewall.so cstecgi.cgi setIpQosRules stack-based overflow vdb-entry technical-description
- VDB-389947 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-19811 | CVE Analysis and Report third-party-advisory
- Submit #869425 | Totolink A800R V4.1.2cu.5137_B20200730 Buffer Overflow third-party-advisory
- https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setIpQosRules.md exploit
- https://www.totolink.net/ product