CVE-2026-6155 | Totolink A7100RU 7.4cu.2313 CGI /cgi-bin/cstecgi.cgi setWanCfg pppoeServiceName os command injection

VDB-357035 · CVE-2026-6155 · SUBMIT #357035 TOTOLINK A7100RU 7.4CU.2313 CGI /CGI-BIN/CSTECGI.CGI SETWANCFG PPPOESERVICENAME OS COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.9 $0-$5k 1.20+ Summaryinfo A vulnerability was found in Totolink A7100RU 7.4cu.2313. It has been rated as critical. This affects the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument pppoeServiceName leads to os command injection. This vulnerability is referenced as CVE-2026-6155. Remote exploitation of the attack is possible. Furthermore, an exploit is available. Detailsinfo A vulnerability was found in Totolink A7100RU 7.4cu.2313 and classified as critical. This issue affects the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument pppoeServiceName with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-6155. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK. The exploit is available at github.com. It is declared as proof-of-concept. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor Totolink Name A7100RU Version 7.4cu.2313 License commercial Website Vendor: https://www.totolink.net/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 9.8 VulDB Meta Temp Score: 8.9 VulDB Base Score: 9.8 VulDB Temp Score: 8.9 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Os command injection CWE: CWE-78 / CWE-77 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/12/2026 Advisory disclosed 04/12/2026 +0 days VulDB entry created 04/12/2026 +0 days VulDB entry last update Sourcesinfo Vendor: totolink.net Advisory: github.com Status: Not defined CVE: CVE-2026-6155 (🔒) GCVE (CVE): GCVE-0-2026-6155 GCVE (VulDB): GCVE-100-357035 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 04/12/2026 20:11 Changes: 04/12/2026 20:11 (57) Complete: 🔍 Submitter: LtzHust2 Cache ID: 99:9C9:101 Submitinfo Accepted Submit #793679: Totolink A7100RU 7.4cu.2313_b20191024 Command Injection (by LtzHust2) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸