CVE-2026-3841 (GCVE-0-2026-3841)

Vulnerability from cvelistv5 – Published: 2026-03-12 17:25 – Updated: 2026-03-13 14:35
VLAI?
Title
Command Injection Vulnerability in Telnet CLI on TP-Link TL-MR6400
Summary
A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3. This issue is caused by insufficient sanitization of data processed during specific CLI operations. An authenticated attacker with elevated privileges may be able to execute arbitrary system commands. Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability.
Severity ?
8.5 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')
Assigner
References
Impacted products
Vendor Product Version
TP-Link Systems Inc. TL-MR6400 v5.3 Affected: 0 , < 1.9.0 Build 260108 (custom)
Create a notification for this product.
Credits
MrBruh
Show details on NVD website
To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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