CVE-2025-20634CWE-787

In Modem, there is a possible out of bounds write due to a missing bounds check

High · published February 3, 2025

CVSS v3.1
8.8
EPSS
1%
Percentile
55.2
In the wild
Unconfirmed
What it is

🚨 A sneaky oversight in Modem could allow a rogue base station to launch a remote code execution attack without any user interaction! 🔥 Think of it like a train station where the guard takes a nap, allowing anyone to hop on any train without checking tickets. In this case, an attacker can exploit a missing bounds check to write whatever code they want, as long as they control the base station. This vulnerability is absolutely devastating as it could allow an attacker to execute malicious code on devices connected to the rogue base station. This means they could potentially steal sensitive information, manipulate device functionality, or spread malware without any additional effort from the user. The window for exploitation is wide open, and that’s a big problem!

Put simply

Think of it like a train station where the guard takes a nap, allowing anyone to hop on any train without checking tickets. In this case, an attacker can exploit a missing bounds check to write whatever code they want, as long as they control the base station. The out-of-bounds write vulnerability in Modem occurs due to a missing bounds check when a device connects to a potentially malicious base station. This flaw enables remote code execution, as attackers can inject their code seamlessly, gaining control without requiring user permissions.

What to do

This vulnerability is absolutely devastating as it could allow an attacker to execute malicious code on devices connected to the rogue base station. This means they could potentially steal sensitive information, manipulate device functionality, or spread malware without any additional effort from the user. The window for exploitation is wide open, and that’s a big problem! To address this vulnerability, patch to version MOLY01289384 immediately. Additionally, implement network controls to prevent devices from connecting to untrusted base stations, and educate users about the risks of rogue connections. Regularly monitoring device connections can also help mitigate this risk. This is fixable! Update your systems now and protect your devices like the security hero you are! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00770 · 55.2th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2025-02-03T03:23Z
EPSS history
Timeline
  • 03 FEB 03:23Z
    In Modem, there is a possible out of bounds write due to a missing bounds check
    cvelistv5