CVE-2021-4144
TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS...
TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection.
- Record
CVE-2021-4144- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-78
- Updated
- 2026-11-02
CVE List No score
TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection.
- Record
CVE-2021-4144- Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2021-34013 No score
TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection.
- Record
EUVD-2021-34013- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mhhg-695x-jq83 No score
TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS...
TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection.
- Record
GHSA-mhhg-695x-jq83- Weakness
- CWE-78
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-4144 is a high vulnerability (CVSS 8.8) in Tp-link Tl-wr802n V4(jp), published December 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.95%, the 80th percentile. No source names a fixed version.