CVE-2026-5852 is an OS command injection vulnerability affecting the Totolik A7100RU router (version 7.4cu.2313_b20191024) in the setIptvCfg function of the CGI Handler component. The flaw exists in the /cgi-bin/cstecgi.cgi file where improper validation of the igmpVer parameter allows attackers to execute arbitrary commands. This vulnerability carries a critical CVSS score of 9.8 with high impact across confidentiality, integrity, and availability. The attack requires no authentication, no user interaction, and can be executed remotely over the network from any location. Exploit code has been publicly released, though the vulnerability is not currently listed on active KEV or Hot List databases, suggesting limited documented active exploitation at this time but requiring immediate attention given the severity rating and public availability of exploit materials.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Totolink | A7100RU | 7.4cu.2313_b20191024CNA affected |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.