CVE-2018-14933KEV · OVERDUE

NUUO NVRmini Devices OS Command Injection Vulnerability

Critical · published August 4, 2018

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.

652
days past CISA
deadline
CVSS v3.1
9.8
EPSS
95%
Percentile
99.9
In the wild
Confirmed
What it is

🔥 A crafty command injection vulnerability in NUUO NVRmini devices allows an attacker to execute arbitrary commands remotely just by manipulating parameters! Think of it like a restaurant kitchen that accepts any order without checking the ingredients — a sneaky chef could slip in a recipe that redefines the menu entirely! This means an attacker could waltz in and run any shell command, potentially gaining full control over the device. They could steal sensitive data, disrupt services, or even use the compromised device as a launching pad for further attacks — it's absolutely devastating!

Put simply

Think of it like a restaurant kitchen that accepts any order without checking the ingredients — a sneaky chef could slip in a recipe that redefines the menu entirely! The vulnerability resides in the `upgrade_handle.php` script, which fails to properly sanitize the `uploaddir` parameter in the `writeuploaddir` command, allowing for Remote Code Execution (RCE) via shell metacharacters.

What to do

This means an attacker could waltz in and run any shell command, potentially gaining full control over the device. They could steal sensitive data, disrupt services, or even use the compromised device as a launching pad for further attacks — it's absolutely devastating! Immediately patch your devices to the latest firmware version that addresses this vulnerability. Additionally, review your security practices around input validation and command execution to prevent similar issues. You've got this! Following these steps, you'll put an impenetrable shield around your devices in no time! 🛡️

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
0.94761 · 99.9th percentile
Published
2018-08-04T19:00Z
KEV added
2024-12-18 · due 2025-01-08
EPSS history
Timeline
  • 18 DEC 00:00Z
    Added to CISA KEV — remediate by Jan 8
    kev
  • 04 AUG 19:00Z
    upgrade_handle.php on NUUO NVRmini devices allows Remote Command Execution via shell metacharacters in the uploaddir parameter for a writeuploaddir command
    cvelistv5