CVE-2025-49603

Northern.tech Mender Server before 3.7.11 and 4.x before 4.0.1 has Incorrect Access Control

Critical · published June 26, 2025

CVSS v3.1
9.1
EPSS
0%
Percentile
31.7
In the wild
Unconfirmed
What it is

🚨 A critical access control flaw in Northern.tech Mender Server could leave your system wide open! ⚠️ Imagine a restaurant where anyone can wander into the kitchen and start cooking without any checks - that's what this vulnerability allows an attacker to do! It’s a recipe for chaos if left unaddressed. An attacker could exploit this flaw to gain unauthorized access to sensitive data and operations, leading to potentially devastating outcomes like data theft or system compromise. This kind of breach can be catastrophic for both security and reputation, so it’s crucial to act swiftly!

Put simply

Imagine a restaurant where anyone can wander into the kitchen and start cooking without any checks - that's what this vulnerability allows an attacker to do! It’s a recipe for chaos if left unaddressed. This vulnerability in Northern.tech Mender Server (versions before 3.7.11 and 4.x before 4.0.1) stems from incorrect access control, allowing attackers to bypass intended restrictions and access sensitive resources without proper authorization.

What to do

An attacker could exploit this flaw to gain unauthorized access to sensitive data and operations, leading to potentially devastating outcomes like data theft or system compromise. This kind of breach can be catastrophic for both security and reputation, so it’s crucial to act swiftly! To safeguard your systems, upgrade to Mender Server version 3.7.11 or 4.0.1 immediately. Conduct a thorough audit of your access controls and implement strong authentication mechanisms to prevent unauthorized access in the future. Don't wait—secure your environment ASAP! You've got this! With the right steps, you can lock down your systems and keep the bad actors at bay. 🛡️

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00388 · 31.7th percentile
Published
2025-06-26T00:00Z
EPSS history
Timeline
  • 26 JUN 00:00Z
    Northern.tech Mender Server before 3.7.11 and 4.x before 4.0.1 has Incorrect Access Control
    cvelistv5