CVE-2025-66217
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductAiscatcher Ais-catcher
PublishedNov 29, 2025
First seenNov 29, 2025
Weakness typeCWE-122CWE-122CWE-191CWE-191
How to fix
Update
- aiscatcher ais-catcher0.64 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| aiscatcher ais-catcher | v < 0.64 | 0.64 |
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