CVE-2025-41687CWE-121

Weidmueller: Unauthenticated Stack-Based Buffer Overflow in u-link Management API

Critical · published July 23, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
55.1
In the wild
Unconfirmed
What it is

🚨 A stack-based buffer overflow in the u-link Management API lets attackers waltz right into your devices without breaking a sweat! 🔥 Think of it like a hotel with a faulty keycard system — a rogue guest can slip in without verification, gaining access to every locked room. This vulnerability is the digital equivalent of someone holding the master key! An attacker could exploit this flaw to gain full control over the affected devices, potentially leading to data theft, system manipulation, or even destruction of critical operations. Imagine the chaos if your whole network gets compromised!

Put simply

Think of it like a hotel with a faulty keycard system — a rogue guest can slip in without verification, gaining access to every locked room. This vulnerability is the digital equivalent of someone holding the master key! This vulnerability arises from a stack-based buffer overflow that occurs due to improper handling of user input by the u-link Management API, allowing unauthenticated attackers to overwrite memory and execute arbitrary code.

What to do

An attacker could exploit this flaw to gain full control over the affected devices, potentially leading to data theft, system manipulation, or even destruction of critical operations. Imagine the chaos if your whole network gets compromised! Immediate action is crucial! Update to the latest version of the u-link Management API as soon as possible to eliminate this vulnerability. Additionally, implement strict input validation to defend against buffer overflow attacks in the future. You've got this! By following these steps, you'll be well on your way to securing your devices and keeping the bad guys out! 🛡️

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
0.00769 · 55.1th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2025-07-23T08:23Z
EPSS history
Timeline
  • 23 JUL 08:23Z
    Weidmueller: Unauthenticated Stack-Based Buffer Overflow in u-link Management API
    cvelistv5