CVE-2026-3227A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements used in an OS command.
Updated under an hour ago ()
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It affects tp-link tl-wr802n_firmware and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements used in an OS command. In the router configuration import function allows an authenticated attacker to upload a crafted configuration file that results in execution of OS commands with root privileges during port-trigger processing. Successful exploitation allows an authenticated attacker to execute system commands with root privileges, leading to full device compromise.
- CVSS
- 6.8 MEDIUM (v3.1, NVD)CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
tp-link tl-wr802n_firmware tp-link:tl-wr802n_firmware | before 260304 | NVD |
tp-link tl-wr841n_firmware tp-link:tl-wr841n_firmware | before 260303 | NVD |
tp-link tl-wr840n_firmware tp-link:tl-wr840n_firmware | before 260304 | NVD |
References
- https://www.tp-link.com/en/support/download/tl-wr802n/v4/#Firmwareproduct
- https://www.tp-link.com/en/support/download/tl-wr840n/v6/#Firmwareproduct
- https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmwareproduct
- https://www.tp-link.com/us/support/download/tl-wr802n/v4/#Firmwareproduct
- https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmwareproduct
- https://www.tp-link.com/us/support/faq/5018/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.