CVE-2026-6483 | Wavlink WL-WN530H4 20220721 /cgi-bin/internet.cgi strcat/snprintf os command injection

VDB-358021 · CVE-2026-6483 · GCVE-100-358021 WAVLINK WL-WN530H4 20220721 /CGI-BIN/INTERNET.CGI STRCAT/SNPRINTF OS COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.5 $0-$5k 1.84+ Summaryinfo A vulnerability classified as critical has been found in Wavlink WL-WN530H4 20220721. This issue affects the function strcat/snprintf of the file /cgi-bin/internet.cgi. This manipulation causes os command injection. This vulnerability is handled as CVE-2026-6483. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to upgrade the affected component. Detailsinfo A vulnerability classified as critical was found in Wavlink WL-WN530H4 20220721. Affected by this vulnerability is the function strcat/snprintf of the file /cgi-bin/internet.cgi. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The advisory is shared at github.com. This vulnerability is known as CVE-2026-6483. The exploitation appears to be easy. The attack can be launched remotely. The exploitation needs additional levels of successful authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue. It is possible to download the exploit at github.com. It is declared as proof-of-concept. Upgrading to version 2026.04.16 eliminates this vulnerability. The upgrade is hosted for download at dl.wavlink.com. Productinfo Vendor Wavlink Name WL-WN530H4 Version 20220721 License commercial 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: 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: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: WL-WN530H4 2026.04.16 Timelineinfo 04/17/2026 Advisory disclosed 04/17/2026 +0 days VulDB entry created 04/17/2026 +0 days VulDB entry last update Sourcesinfo Advisory: github.com Status: Confirmed CVE: CVE-2026-6483 (🔒) GCVE (CVE): GCVE-0-2026-6483 GCVE (VulDB): GCVE-100-358021 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 04/17/2026 07:40 Changes: 04/17/2026 07:40 (58) Complete: 🔍 Submitter: ST4R Cache ID: 99:C3C:101 Submitinfo Accepted Submit #783055: https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in- WN530H4 (AC1200 Dual-Band Wi-Fi Router) Firmware: WN530H4-WAVLINK_20220721 Improper Neutralization of Special Elements used in an OS Comman (by ST4R) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸