CVE-2020-36178 is a critical OS command injection vulnerability affecting TP-Link TL-WR840N 6_EU_0.9.1_4.16 devices. It arises from the oal_ipt_addBridgeIsolationRules function, which directly uses unvalidated web interface input (an IP address field) in a system library call to iptables. This vulnerability carries a CVSS score of 9.8 (CRITICAL) due to its network-based attack vector, low attack complexity, and high potential for complete compromise of confidentiality, integrity, and availability. While the vulnerability is severe, there is currently no evidence of active exploitation, publicly available exploit code in Metasploit or ExploitDB, or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
6_eu_0.9.1_4.16CPE matchmatch criteria | cpe:2.3:o:tp-link:tl-wr840n_firmware:6_eu_0.9.1_4.16:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.