D-Link DIR-822K/DWR-M920 Buffer Overflow via formVpnConfigSetup Remote
CVE-2025-13550 Published on November 23, 2025
D-Link DIR-822K/DWR-M920 formVpnConfigSetup buffer overflow
A vulnerability was determined in D-Link DIR-822K and DWR-M920 1.00_20250513164613/1.1.50. Impacted is an unknown function of the file /boafrm/formVpnConfigSetup. Executing manipulation of the argument submit-url can lead to buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.
Timeline
Advisory disclosed
VulDB entry created
VulDB entry last update
Weakness Types
What is a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2025-13550 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2025-13550 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2025-13550
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Affected Versions
D-Link DIR-822K:- Version 1.00_20250513164613 is affected.
- Version 1.1.50 is affected.
- Version 1.00_20250513164613 is affected.
- Version 1.1.50 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.