CVE-2020-25218

Grandstream GRP261x VoIP phone running firmware version 1.0.3.6 (Base) allow Authentication Bypass in its administrative web interface

published March 29, 2021

CVSS
—
EPSS
2%
Percentile
78.6
In the wild
Unconfirmed
What it is

⚠️ A sneaky authentication bypass in the Grandstream GRP261x’s admin interface means your phone could be left wide open for mischief! 🤔 Think of it as a hotel where anyone can check into any room without a keycard — all it takes is the right knowledge and suddenly, you’re inside the VIP suite! If an attacker exploits this flaw, they could gain unauthorized access to the administrative settings, potentially reconfiguring your phone, intercepting calls, or even monitoring conversations. That's like giving strangers the keys to your communications — not cool at all!

Put simply

Think of it as a hotel where anyone can check into any room without a keycard — all it takes is the right knowledge and suddenly, you’re inside the VIP suite! This vulnerability allows attackers to bypass authentication controls in the VoIP phone's web interface, giving them administrative access without the required credentials.

What to do

If an attacker exploits this flaw, they could gain unauthorized access to the administrative settings, potentially reconfiguring your phone, intercepting calls, or even monitoring conversations. That's like giving strangers the keys to your communications — not cool at all! To protect your devices, upgrade the firmware to the latest version available from Grandstream that addresses this issue. Additionally, ensure that strong, unique passwords are used for all administrative interfaces. You've got this! Just follow these steps and you’ll be on your way to securing your VoIP phone! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01822 · 78.6th percentile
Published
2021-03-29T16:54Z
EPSS history
Timeline
  • 29 MAR 16:54Z
    Grandstream GRP261x VoIP phone running firmware version 1.0.3.6 (Base) allow Authentication Bypass in its administrative web interface
    cvelistv5