CVE-2023-33538KEV · OVERDUE

TP-Link Multiple Routers Command Injection Vulnerability

High · published June 7, 2023

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 8.8. It is confirmed in active exploitation. It sits in the 98.7th percentile for exploit probability.

474
days past CISA
deadline
CVSS v3.1
8.8
EPSS
42%
Percentile
98.7
In the wild
Confirmed
What it is

🚨 An easily exploitable command injection flaw is lurking in certain TP-Link routers! Just accessing a specific URL can let attackers unleash their creativity for nefarious purposes. 🔥 Think of it as a restaurant where the chef blindly trusts every order that comes in without checking the details — a recipe for disaster if someone decides to experiment with the menu! This vulnerability could allow an attacker to execute arbitrary commands on the router, potentially giving them control over the entire network. They could intercept traffic, change settings, or even lock you out entirely. It's like handing over the keys to your digital kingdom without a second thought!

Put simply

Think of it as a restaurant where the chef blindly trusts every order that comes in without checking the details — a recipe for disaster if someone decides to experiment with the menu! The command injection vulnerability exists in the /userRpm/WlanNetworkRpm component, allowing unauthenticated users to run arbitrary commands on the affected routers, specifically models TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2.

What to do

This vulnerability could allow an attacker to execute arbitrary commands on the router, potentially giving them control over the entire network. They could intercept traffic, change settings, or even lock you out entirely. It's like handing over the keys to your digital kingdom without a second thought! Immediately patch your routers to the latest firmware version provided by TP-Link. If updates are unavailable, consider isolating affected devices from critical networks to mitigate risk. Regularly audit your network for unauthorized access. 🛡️ You've got this! Follow these actions, and you'll secure your network in no time! 💪✨

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.41606 · 98.7th percentile
Published
2023-06-07T00:00Z
KEV added
2025-06-16 · due 2025-07-07
EPSS history
Timeline
  • 16 JUN 00:00Z
    Added to CISA KEV — remediate by Jul 7
    kev
  • 07 JUN 00:00Z
    TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a command injection vulnerability via the component…
    cvelistv5