OpenTTD Client Disconnection Handling Use-after-free Vulnerability

Risk: Medium
Local: No
Remote: Yes
CWE: CWE-399

CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

Hi folks, we, the OpenTTD developers, have identified a security vulnerability in OpenTTD (an open source game with multiplayer). Would you be so kind as to allocate a CVE id for this issue? The issue concerns a denial of service vulnerability in the form of reading and writing already freed memory. The first vulnerable version is 1.0.0, the upcoming 1.0.5 release will have the issue fixed. Once a CVE id is allocated, the issue will be documented at Thanks in advance, Remko 'Rubidium' Bijker


Vote for this issue:


Thanks for you vote!


Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.

(*) - required fields.  
{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1
{{ x.comment }}

Copyright 2021,


Back to Top