CVE-2020-17456

CRITICAL EXPLOITED IN THE WILD NUCLEI

SEOWON INTECH SLC-130,SLR-120S - RCE

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2020-17456 has been observed exploited in the wild (reported by VulnCheck KEV, InTheWild.io). EIP tracks 2 public exploits from researchers including Aryan Chehreghani, Al1ex. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit leverages an unauthenticated command injection vulnerability in Seowon SLR-120 routers by injecting commands into the 'pingIpAddr' parameter of the system_log.cgi endpoint. It allows remote code execution as the root user.

Description

SEOWON INTECH SLC-130 And SLR-120S devices allow Remote Code Execution via the ipAddr parameter to the system_log.cgi page.

Exploits (2)

exploitdb WORKING POC
by Aryan Chehreghani · pythonremotehardware
https://www.exploit-db.com/exploits/50821

This exploit leverages an unauthenticated command injection vulnerability in Seowon SLR-120 routers by injecting commands into the 'pingIpAddr' parameter of the system_log.cgi endpoint. It allows remote code execution as the root user.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Seowon SLR-120 series routers (SLR-120S42G, SLR-120D42G, SLR-120T42G)
No auth needed
Prerequisites: Network access to the target router · Target router must be running a vulnerable firmware version
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 4 stars
by Al1ex · remote
https://github.com/Al1ex/CVE-2020-17456

This PoC exploits an authenticated remote command execution vulnerability in Seowon SLC-130 routers via command injection in the ping diagnostic function. It uses hardcoded credentials to authenticate and injects commands through the 'pingIpAddr' parameter.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Seowon SLC-130 router
Auth required
Prerequisites: Network access to the target router · Default or known credentials
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

SEOWON INTECH SLC-130 & SLR-120S - Unauthenticated Remote Code Execution
CRITICALby gy741,edoardottt

References (5)

Core 5
Core References
Exploit, Third Party Advisory x_refsource_misc
https://maj0rmil4d.github.io/Seowon-SlC-130-And-SLR-120S-Exploit/
Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/50821

Scores

CVSS v3 9.8
EPSS 0.8891
EPSS Percentile 99.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

VulnCheck KEV 2022-04-12
InTheWild.io 2022-04-17
CWE
CWE-78
Status published
Products (5)
seowonintech/slc-130_firmware
seowonintech/slr-120d42g_firmware
seowonintech/slr-120s42g_firmware
seowonintech/slr-120s_firmware
seowonintech/slr-120t42g_firmware
Published Aug 20, 2020
Tracked Since Feb 18, 2026