CVE-2024-7261CWE-78

The improper neutralization of special elements in the parameter "host" in the CGI program of Zyxel NWA1123ACv3 firmware version 6.70(ABVT.4) and earlier…

Critical · published September 3, 2024

CVSS v3.1
9.8
EPSS
11%
Percentile
96.0
In the wild
Unconfirmed
What it is

🚨 An unauthenticated attacker can execute OS commands just by sending a sneaky crafted cookie! This is a serious risk for Zyxel NWA1123ACv3 and other firmware versions. 🔥 Think of it like a restaurant that doesn’t check the orders properly—anyone can slip in a phony request to the kitchen and get whatever they want, even if they're not a paying customer. In this case, an attacker can manipulate the 'host' parameter to deliver harmful commands directly to the device! The implications are absolutely devastating! An attacker could take control of vulnerable devices, steal sensitive information, or even launch attacks on your network. This could lead to a complete compromise of the integrity and confidentiality of the system—truly a nightmare scenario!

Put simply

Think of it like a restaurant that doesn’t check the orders properly—anyone can slip in a phony request to the kitchen and get whatever they want, even if they're not a paying customer. In this case, an attacker can manipulate the 'host' parameter to deliver harmful commands directly to the device! This vulnerability arises from improper sanitization of special characters in the 'host' parameter of the CGI program, allowing an unauthenticated attacker to execute arbitrary OS commands by sending specially crafted cookies.

What to do

The implications are absolutely devastating! An attacker could take control of vulnerable devices, steal sensitive information, or even launch attacks on your network. This could lead to a complete compromise of the integrity and confidentiality of the system—truly a nightmare scenario! To protect your devices, immediately upgrade to firmware versions 6.70(ABVT.5) or later for NWA1123ACv3, 6.70(ABVS.5) or later for WAC500, 7.00(ACDO.2) or later for WAX655E, and 7.00(ACLE.2) or later for WBE530. Ensure that firmware on USG LITE 60AX is updated to V2.00(ACIP.3) or later. Regularly audit your devices for any unauthorized access attempts. You've got this! Follow these steps and secure your network like a pro! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.11408 · 96.0th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2024-09-03T02:10Z
EPSS history
Timeline
  • 03 SEP 02:10Z
    The improper neutralization of special elements in the parameter "host" in the CGI program of Zyxel NWA1123ACv3 firmware version 6.70(ABVT.4) and earlier…
    cvelistv5