CVE-2026-5101 | Totolink A3300R 17.0.0cu.557_b20221024 Parameter /cgi-bin/cstecgi.cgi setLanCfg lanIp command injection

VDB-354126 · CVE-2026-5101 · GCVE-100-354126 TOTOLINK A3300R 17.0.0CU.557_B20221024 PARAMETER /CGI-BIN/CSTECGI.CGI SETLANCFG LANIP COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.7 $0-$5k 1.84+ Summaryinfo A vulnerability labeled as critical has been found in Totolink A3300R 17.0.0cu.557_b20221024. This vulnerability affects the function setLanCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument lanIp results in command injection. This vulnerability is identified as CVE-2026-5101. The attack can be executed remotely. Additionally, an exploit exists. Detailsinfo A vulnerability, which was classified as critical, was found in Totolink A3300R 17.0.0cu.557_b20221024. Affected is the function setLanCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument lanIp with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The advisory is available at github.com. This vulnerability is traded as CVE-2026-5101. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details and a public exploit are known. This vulnerability is assigned to T1202 by the MITRE ATT&CK project. The exploit is shared for download 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 A3300R Version 17.0.0cu.557_b20221024 License commercial Website Vendor: https://www.totolink.net/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 5.7 VulDB Base Score: 6.3 VulDB Temp Score: 5.7 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: Command injection CWE: CWE-77 / CWE-74 / CWE-707 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 03/29/2026 Advisory disclosed 03/29/2026 +0 days VulDB entry created 03/29/2026 +0 days VulDB entry last update Sourcesinfo Vendor: totolink.net Advisory: github.com Status: Not defined CVE: CVE-2026-5101 (🔒) GCVE (CVE): GCVE-0-2026-5101 GCVE (VulDB): GCVE-100-354126 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/29/2026 19:56 Changes: 03/29/2026 19:56 (57) Complete: 🔍 Submitter: LtzHuster2 Cache ID: 99:304:101 Submitinfo Accepted Submit #779128: Totolink A3300R 17.0.0cu.557_b20221024 Command Injection (by LtzHuster2) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸