# CVE-2025-66217

## Summary

- **CVE ID:** CVE-2025-66217
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-122, CWE-191
- **Published:** Nov 29, 2025
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- jvde-github — AIS-catcher (< 0.64)

## References

- [CNA](https://github.com/jvde-github/AIS-catcher/security/advisories/GHSA-93mj-c8q3-69rg)
- [CNA](https://github.com/jvde-github/AIS-catcher/commit/e0f7242eee659909adc11a4c561c3f7011bdefe7)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.73%
- **EPSS Percentile:** 52.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._