Wavlink WL-WN530H4 20220721 /cgi-bin/internet.cgi strcat/snprintf os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k4.34

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.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒

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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: 216::103

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)

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