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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.

PUBLISHED Reserved 2026-02-15 | Published 2026-02-16 | Updated 2026-02-23 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

24.10.19
affected

Timeline

2026-02-15:Advisory disclosed
2026-02-15:VulDB entry created
2026-02-19:VulDB entry last update

Credits

jfkk (VulDB User) reporter

References

github.com/glkfc/IoT-Vulnerability/blob/main/wayos/wayos.md exploit

vuldb.com/?id.346157 (VDB-346157 | WAYOS FBM-220G rc sub_40F820 command injection) vdb-entry technical-description

vuldb.com/?ctiid.346157 (VDB-346157 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.749802 (Submit #749802 | WAYOS FBM220G and others 24.10.19 Command Injection) third-party-advisory

github.com/glkfc/IoT-Vulnerability/blob/main/wayos/wayos.md related

cve.org (CVE-2026-2548)

nvd.nist.gov (CVE-2026-2548)

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