CVE-2025-13551CWE-119CWE-120

CVE-2025-13551

High · published November 23, 2025

CVSS v3.1
8.8
EPSS
1%
Percentile
54.6
In the wild
Unconfirmed
What it is

⚡ A crafty buffer overflow vulnerability lurks in D-Link DIR-822K and DWR-M920 routers, just waiting for an attacker to strike! 🔥 Think of this like a water pipe that can burst under too much pressure. When the wrong input is sent to the router's configuration, it's like cranking the water flow to the max—eventually, it overflows, causing chaos! An attacker could leverage this vulnerability to execute malicious code remotely, gaining control over the router. This means they could intercept your internet traffic, manipulate your network settings, or even launch further attacks—truly a nightmare scenario!

Put simply

Think of this like a water pipe that can burst under too much pressure. When the wrong input is sent to the router's configuration, it's like cranking the water flow to the max—eventually, it overflows, causing chaos! This vulnerability occurs due to a buffer overflow caused by manipulating the 'submit-url' argument in the /boafrm/formWanConfigSetup function. When this function processes unexpected input, it can lead to unauthorized access and execution of arbitrary code.

What to do

An attacker could leverage this vulnerability to execute malicious code remotely, gaining control over the router. This means they could intercept your internet traffic, manipulate your network settings, or even launch further attacks—truly a nightmare scenario! To protect your network, immediately update your D-Link devices to the latest firmware version. Regularly check for updates and ensure that any unnecessary remote access is disabled to minimize exposure. 🛡️ You've got this! Stay vigilant, patch those routers, and keep your network secure! 🚀

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00755 · 54.6th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2025-11-23T18:15Z
Affected products (2)
ProductVersionsFixed in
dlink/dir-822k_firmwareall versions—
dlink/dwr-m920_firmwareall versions—
References (9)
EPSS history
Timeline
  • 23 NOV 13:02Z
    D-Link DIR-822K/DWR-M920 formWanConfigSetup buffer overflow
    cvelistv5