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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00311.

Exploitation poc

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Ais-catcher Project
  • Ais-catcher

No data.

No data.

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Vendors Products
Ais-catcher Project
  • Ais-catcher
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/jvde-github/AIS-catcher/commit/e0f7242eee659909adc11a4c561c3f7011bdefe7 cve-icon cve-icon
https://github.com/jvde-github/AIS-catcher/security/advisories/GHSA-93mj-c8q3-69rg cve-icon cve-icon cve-icon
History

Mon, 01 Dec 2025 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Ais-catcher Project
Ais-catcher Project ais-catcher
Vendors & Products Ais-catcher Project
Ais-catcher Project ais-catcher

Mon, 01 Dec 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sat, 29 Nov 2025 02:30:00 +0000

Type Values Removed Values Added
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.
Title AIS-catcher Integer Underflow in MQTT Packet Parsing leading to Heap Buffer Overflow
Weaknesses CWE-122
CWE-191
References
Metrics cvssV4_0

{'score': 8.8, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-12-01T14:11:01.007Z

Reserved: 2025-11-24T23:01:29.678Z

Link: CVE-2025-66217

cve-icon Vulnrichment

Updated: 2025-12-01T13:52:49.406Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-11-29T03:15:59.880

Modified: 2025-12-01T15:39:33.110

Link: CVE-2025-66217

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-01T15:18:25Z