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Public proof of concept

CVE-2020-12109

A public proof of concept exists; no exploitation attested.

  • Published2020-05-04
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Certain TP-Link devices allow Command Injection. This affects NC200 2.1.9 build 200225, NC210 1.0.9 build 200304, NC220 1.3.0 build 200304, NC230 1.3.0 build 200304, NC250 1.3.0 build 200304, NC260 1.5.2 build 200304, and NC450 1.5.3 build 200304.

Timeline

dates in UTC
  1. 2020-05-0416:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-12109?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-12109?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Tp-link nc260 firmwareversion to verify
BranchAffectedFixed in
1.0= 1.0.5no fix published
1.0= 1.0.6no fix published
1.4= 1.4.1no fix published
1.5= 1.5.0no fix published
1.5= 1.5.2no fix published
Tp-link nc250 firmwareversion to verify
BranchAffectedFixed in
1.0= 1.0.8no fix published
1.0= 1.0.10no fix published
1.2= 1.2.1no fix published
1.3= 1.3.0no fix published
Tp-link nc450 firmwareversion to verify
BranchAffectedFixed in
1.0= 1.0.15no fix published
1.1= 1.1.2no fix published
1.3= 1.3.4no fix published
1.5= 1.5.3no fix published

4 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
1 moduleexploit/linux/http/tp_link_ncxxx_bonjour_command_injectionrank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

Sources

  • NVDCVSS 3.18.8read 2026-10-23
  • NVDCVSS 2.09read 2026-10-23
  • NVDweakness (CWE)CWE-78read 2026-10-23
  • FIRST EPSSEPSS score74.3 %read 2026-11-03
  • Metasploit FrameworkMetasploit modules1known since 2026-11-01

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2020-05-04
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-12109?

Certain TP-Link devices allow Command Injection. This affects NC200 2.1.9 build 200225, NC210 1.0.9 build 200304, NC220 1.3.0 build 200304, NC230 1.3.0 build 200304, NC250 1.3.0 build 200304, NC260 1.5.2 build 200304, and NC450 1.5.3 build 200304.

Is CVE-2020-12109 actively exploited?

Active exploitation of CVE-2020-12109 has not been confirmed. Its EPSS score was 74.3% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12109?

CVE-2020-12109 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record