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PatchSiren cyber security CVE debrief

CVE-2026-11410 TP-Link Systems Inc. CVE debrief

CVE-2026-11410 is an authenticated OS command injection vulnerability in the BigPond Cable (BPA) WAN configuration module of TL-WR940N v6. This vulnerability allows an attacker with administrative access to execute arbitrary system commands with elevated privileges due to improper sanitization of user input. The vulnerability has a CVSS score of 8.5 and is classified as HIGH severity. The CVE was published on 2026-06-17 and last modified on 2026-06-18. Administrators of affected systems should take immediate action to mitigate this vulnerability.

Vendor
TP-Link Systems Inc.
Product
TL-WR940N v6
CVSS
HIGH 8.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-18
Advisory published
2026-06-17
Advisory updated
2026-06-18

Who should care

Administrators and users of TL-WR940N v6 devices, especially those with administrative access, should be aware of this vulnerability and take necessary precautions to prevent exploitation.

Technical summary

The vulnerability exists in the BigPond Cable (BPA) WAN configuration module of TL-WR940N v6 due to improper sanitization of user input. An attacker with administrative access can exploit this issue to execute arbitrary system commands with elevated privileges. The CVSS vector for this vulnerability is 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

High

Recommended defensive actions

  • Update to the latest firmware version as soon as available
  • Restrict administrative access to the device
  • Implement proper input validation and sanitization for user input
  • Monitor device logs for suspicious activity
  • Consider replacing the device if it is no longer supported by the vendor
  • Limit exposure of the device to the internet

Evidence notes

The information provided is based on data from the National Vulnerability Database (NVD) and the CVE.org website. The vendor of the affected product is likely TP-Link, based on the provided references.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11410 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11410

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-11410 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11410

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://www.tp-link.com/en/support/download/tl-wr940n/v6/

    f23511db-6c3e-4e32-a477-6aa17d310630

  • Source reference

    Unverified legacy reference

    URL: https://www.tp-link.com/us/support/download/tl-wr940n/v6/

    f23511db-6c3e-4e32-a477-6aa17d310630

  • Source reference

    Unverified legacy reference

    URL: https://www.tp-link.com/us/support/faq/5131/

    f23511db-6c3e-4e32-a477-6aa17d310630

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.