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CVE-2026-2548

WAYOS FBM-220G rc sub_40F820 command injection

MEDIUM
6.3
CVSS Score
Published: February 16, 2026 at 09:02 AM UTC
Updated: June 17, 2026 at 10:31 AM UTC
1 product affected across 1 vendorFBM-220G

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Severity
MEDIUM6.3
Exploit prediction
EPSS 2%
SSVC
PoC

Description

A flaw has been found in WAYOS FBM-220G 24.10.19. This affects the function sub_40F820 of the file rc. Executing a manipulation of the argument upnp_waniface/upnp_ssdp_interval/upnp_max_age can lead to command injection. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Affected

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

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/?id.346157
SignaturePermissions Required
Source: cverecord
https://vuldb.com/?ctiid.346157
Third Party Advisory
Source: cverecord
https://vuldb.com/?submit.749802
Related
Source: cverecord
https://github.com/glkfc/IoT-Vulnerability/blob/main/wayos/wayos.md

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-77CWE-74

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