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TI-2026-02174 Aliases CVE-2026-2548GHSA-vfjw-j4jg-frr6

WAYOS FBM-220G rc sub_40F820 command injection

Priority MEDIUM 57CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02239 82nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WAYOSFBM-220G24.10.19—No fix listedCNA
  • FBM-220G VendorWAYOS Affected 24.10.19 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-2548
  2. 2026-10-03 Alias added: GHSA-vfjw-j4jg-frr6

References

Other 1

  • TI-2023-19277 WAYOS FBM-291W 19.09.11V was discovered to contain a command injection vulnerability via… CVSS 3.1CRITICAL 9.8
  • TI-2023-19276 WAYOS FBM-291W 19.09.11V was discovered to contain a buffer overflow via the component /upgrade_filter.asp. CVSS 3.1CRITICAL 9.8
  • TI-2025-10115 WAYOS LQ_04/LQ_05/LQ_06/LQ_07/LQ_09 usb_paswd.asp command injection CVSS 4.0MEDIUM 6.9
  • TI-2024-29881 WAYOS FBM-291W v19.09.11 is vulnerable to Command Execution via msp_info_htm. CVSS 3.1HIGH 8.0
  • TI-2024-15060 WayOS IBR-7150 <17.06.23 is vulnerable to Cross Site Scripting (XSS). CVSS 3.1MEDIUM 4.7
  • TI-2022-19918 WAYOS LQ_09 22.03.17V was discovered to contain a Cross-Site Request Forgery (CSRF) which… CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences