CVE-2025-66217 is an integer underflow vulnerability in the MQTT parsing logic of AIS-catcher, affecting versions prior to 0.64. An unauthenticated attacker can trigger a massive Heap Buffer Overflow by sending a malformed MQTT packet, leading to immediate Denial of Service (DoS) and potentially Remote Code Execution (RCE) when AIS-catcher is used as a library. This vulnerability has a CVSS score of 7.5 (High) due to its network attack vector and low attack complexity, but currently shows no evidence of active exploitation, public exploit code, or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.64CPE matchmatch criteria | cpe:2.3:a:aiscatcher:ais-catcher:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.