CVE-2026-7218 | Totolink N300RT 3.4.0-B20250430 libapmib.so /boafrm/formWsc is_cmd_string_valid localPin buffer overflow

VDB-359818 · SUBMIT #802127 · CVE-2026-7218 TOTOLINK N300RT 3.4.0-B20250430 LIBAPMIB.SO /BOAFRM/FORMWSC IS_CMD_STRING_VALID LOCALPIN BUFFER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI Summaryinfo A vulnerability was found in Totolink N300RT 3.4.0-B20250430 and classified as critical. This affects the function is_cmd_string_valid of the file /boafrm/formWsc of the component libapmib.so. Executing a manipulation of the argument localPin can lead to buffer overflow. This vulnerability appears as CVE-2026-7218. The attack may be performed from remote. In addition, an exploit is available. Detailsinfo A vulnerability was found in Totolink N300RT 3.4.0-B20250430. It has been declared as critical. This vulnerability affects the function is_cmd_string_valid of the file /boafrm/formWsc of the component libapmib.so. The manipulation of the argument localPin with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The advisory is available at github.com. This vulnerability was named CVE-2026-7218. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are necessary for exploitation. Technical details and also a public exploit are known. It is possible to download the exploit 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 N300RT Version 3.4.0-B20250430 License commercial Website Vendor: https://www.totolink.net/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.2 VulDB Meta Temp Score: 6.5 VulDB Base Score: 7.2 VulDB Temp Score: 6.5 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: Buffer overflow CWE: CWE-120 / CWE-119 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 04/27/2026 Advisory disclosed 04/27/2026 +0 days VulDB entry created 04/27/2026 +0 days VulDB entry last update Sourcesinfo Vendor: totolink.net Advisory: github.com Status: Not defined CVE: CVE-2026-7218 (🔒) GCVE (CVE): GCVE-0-2026-7218 GCVE (VulDB): GCVE-100-359818 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 04/27/2026 17:34 Changes: 04/27/2026 17:34 (57) Complete: 🔍 Submitter: xyhackr Cache ID: 99:1BE:101 Submitinfo Accepted Submit #802127: Totolink N300RT Router V3.4.0-B20250430 Buffer Overflow (by xyhackr) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸