Description
oal_ipt_addBridgeIsolationRules on TP-Link TL-WR840N 6_EU_0.9.1_4.16 devices allows OS command injection because a raw string entered from the web interface (an IP address field) is used directly for a call to the system library function (for iptables). NOTE: oal_ipt_addBridgeIsolationRules is not the only function that calls util_execSystem.
Metrics
CVSS 3.1 9.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://github.com/therealunicornsecurity/therealunicornsecurity.github.io/blob/master/_posts/2020-10-11-TPLink.mdExploit, Third Party Advisory
- https://therealunicornsecurity.github.io/TPLink/Exploit, Third Party Advisory
- https://www.tp-link.com/fr/support/download/tl-wr840n/v6/#FirmwareVendor Advisory
- https://github.com/therealunicornsecurity/therealunicornsecurity.github.io/blob/master/_posts/2020-10-11-TPLink.mdExploit, Third Party Advisory
- https://therealunicornsecurity.github.io/TPLink/Exploit, Third Party Advisory
- https://www.tp-link.com/fr/support/download/tl-wr840n/v6/#FirmwareVendor Advisory
Timeline
- Published
- Jan 6, 2021
- Last modified
- Jun 17, 2026
- NVD status
- Modified