Buffer overflow in Aiscatcher Ais-Catcher
CVE-2025-66217
AIS-catcher is a multi-platform AIS receiver. Prior to version 0.64, an integer underflow vulnerability exists in the MQTT parsing logic of AIS-catcher. This vulnerability allows an attacker to trigger a massive Heap Buffer Overflow by sending a malformed MQTT packet with a manipulated Topic Length field. This leads to an immediate Denial of Service (DoS) and, when used as a library, severe Memory Corruption that can be leveraged for Remote Code Execution (RCE). This issue has been patched in version 0.64.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Aiscatcher Ais-Catcher
- Jvde-Github Ais-Catcher — versions < 0.64
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-66217?
- CVE-2025-66217 is a high-severity vulnerability in Aiscatcher Ais-Catcher, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-11-29.
- How severe is CVE-2025-66217?
- High severity. CVSS v3 base score is 7.5 out of 10.