FTP Voyager 16.2.0 DoS via Buffer Overflow in Site Profile IP Field
CVE-2018-25252 Published on April 4, 2026
FTP Voyager 16.2.0 Denial of Service via Malformed Site Profile
FTP Voyager 16.2.0 contains a denial of service vulnerability that allows local attackers to crash the application by injecting oversized buffer data into the site profile IP field. Attackers can create a malicious site profile containing 500 bytes of repeated characters and paste it into the IP field to trigger a buffer overflow that crashes the FTP Voyager process.
Vulnerability Analysis
CVE-2018-25252 is exploitable with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2018-25252. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2018-25252 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2018-25252
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Affected Versions
Serv-U FTP Voyager Version 16.2.0 is affected by CVE-2018-25252Exploit 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.