CVE-2026-2548CWE-74CWE-77

WAYOS FBM-220G rc sub_40F820 command injection

Medium · published February 16, 2026

CVSS v4.0
5.3
EPSS
3%
Percentile
86.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS: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
EPSS
0.02760 · 86.2th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-02-16T09:02Z
EPSS history
Timeline
  • 16 FEB 09:02Z
    WAYOS FBM-220G rc sub_40F820 command injection
    cvelistv5