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CVE-2026-6483

Wavlink WL-WN530H4 internet.cgi snprintf os command injection

HIGH
7.2
CVSS Score
Published: April 17, 2026 at 10:30 AM UTC
Updated: October 25, 2026 at 11:10 PM UTC
2 products affected across 1 vendorWl WN530H4 FirmwareWL-WN530H4

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Severity
HIGH7.2
Exploit prediction
EPSS 13%
SSVC
PoC

Description

A vulnerability was found in Wavlink WL-WN530H4 20220721. This vulnerability affects the function strcat/snprintf of the file /cgi-bin/internet.cgi. The manipulation results in os command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2026.04.16 is able to resolve this issue. Upgrading the affected component is recommended.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Wl WN530H4 Firmware· Wavlink
95%
All versions
WL-WN530H4· Wavlink
90%
20220721
Vendor states this is fixed in 2026.04.16 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/358021
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/358021/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/783055
Exploit
Source: cverecord
https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/vuldb_submission_report.md
Patch
Source: cverecord
https://dl.wavlink.com/firmware/RD/root_uImage_WN530H4-A_2026.04.16.bin

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGHVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-78CWE-77

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