Riskcovery

CVE-2025-66217

AIS-catcher Integer Underflow in MQTT Packet Parsing leading to Heap Buffer Overflow

State
Published
Severity
8.8 High
Published
Nov 29, 2025
Updated
Dec 1, 2025
Reserved
Nov 24, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.08.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:NGitHub_M

Weaknesses

  • CWE-122 Heap-based Buffer Overflow
  • CWE-191 Integer Underflow (Wrap or Wraparound)

Affected Products

ProductVersions
AIS-catcherjvde-github
  • < 0.64Affected

References

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