Synology BeeStation Manager BSM Buffer Overflow in AdminCenter Before 1.3.2-65648
CVE-2025-12686 Published on May 27, 2026
Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in AdminCenter in Synology BeeStation OS before 1.3.2-65648 allows remote attackers to execute arbitrary code via unspecified vectors.
Vulnerability Analysis
CVE-2025-12686 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
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-2025-12686 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Affected Versions
Synology BeeStation OS:- Version 1.3 and below 1.3.2-65648 is affected.
- Version 1.2 and below 1.3.2-65648 is affected.
- Version 1.1 and below 1.3.2-65648 is affected.
- Version 1.0 and below 1.3.2-65648 is affected.
- Before 1.0 is unknown.
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.