Answer in brief
CVE-2026-3227 records a Medium severity (CVSS 6.8) vulnerability in Authenticated Command Injection on TP-Link TL-WR802N, TL-WR841N and TL-WR840N. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./TL-WR802N v4 (generic), TP Link Systems Inc./TL-WR840N v6 (generic), TP-Link Systems Inc./TL-WR841N v14 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-3227 records a Medium severity (CVSS 6.8) vulnerability in Authenticated Command Injection on TP-Link TL-WR802N, TL-WR841N and TL-WR840N. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./TL-WR802N v4 (generic), TP Link Systems Inc./TL-WR840N v6 (generic), TP-Link Systems Inc./TL-WR841N v14 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps TP-Link Systems Inc./TL-WR802N v4 (generic), TP Link Systems Inc./TL-WR840N v6 (generic), TP-Link Systems Inc./TL-WR841N v14 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| TP-Link Systems Inc./TL-WR802N v4generic | >=0 <V4_260304 | V4_260304 |
| TP Link Systems Inc./TL-WR840N v6generic | >=0 <V6_260304 | V6_260304 |
| TP-Link Systems Inc./TL-WR841N v14generic | >=0 <V14_260303 | V14_260303 |
Published upstream
Mar 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 1, 2026
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.
Quoted source text, attributed separately from HOL analysis.
CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps TP-Link Systems Inc./TL-WR802N v4 (generic), TP Link Systems Inc./TL-WR840N v6 (generic), TP-Link Systems Inc./TL-WR841N v14 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| TP-Link Systems Inc./TL-WR802N v4generic | >=0 <V4_260304 | V4_260304 |
| TP Link Systems Inc./TL-WR840N v6generic | >=0 <V6_260304 | V6_260304 |
| TP-Link Systems Inc./TL-WR841N v14generic | >=0 <V14_260303 | V14_260303 |
Published upstream
Mar 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 1, 2026
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.
Quoted source text, attributed separately from HOL analysis.