CVE-2025-32105

A buffer overflow in the the Sangoma IMG2020 HTTP server through 2.3.9.6 allows an unauthenticated user to achieve remote code execution

Critical · published June 3, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
68.5
In the wild
Unconfirmed
What it is

🔥 A sneaky buffer overflow in Sangoma's IMG2020 HTTP server lets unauthenticated users run wild with remote code execution! Think of it like a restaurant kitchen where a delivery person is allowed to walk in and cook whatever they want — no one is checking their credentials or what they’re preparing. That’s exactly what this vulnerability allows: unrestricted access to execute commands. An attacker can exploit this vulnerability to execute malicious code remotely, leading to complete control over the affected system. This could result in data theft, service disruption, or even a full system takeover — absolutely devastating!

Put simply

Think of it like a restaurant kitchen where a delivery person is allowed to walk in and cook whatever they want — no one is checking their credentials or what they’re preparing. That’s exactly what this vulnerability allows: unrestricted access to execute commands. The buffer overflow occurs in versions up to 2.3.9.6 of the Sangoma IMG2020 HTTP server, allowing attackers to send specially crafted requests that overwrite memory and execute arbitrary code without authentication.

What to do

An attacker can exploit this vulnerability to execute malicious code remotely, leading to complete control over the affected system. This could result in data theft, service disruption, or even a full system takeover — absolutely devastating! Immediately patch to version 2.3.9.7 or higher to close this critical vulnerability. Additionally, review your server configurations to limit unauthorized access and monitor for suspicious activities. Secure your network! You've got this! Follow these steps and you'll be back to a secure state 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
0.01220 · 68.5th percentile
Published
2025-06-03T00:00Z
EPSS history
Timeline
  • 03 JUN 00:00Z
    A buffer overflow in the the Sangoma IMG2020 HTTP server through 2.3.9.6 allows an unauthenticated user to achieve remote code execution
    cvelistv5