CVE-2006-1999

Exp

The multiplayer menu in OpenTTD 0.4.7 allows remote attackers to cause a denial of service via a UDP packet with an incorrect size, which causes the client to return to the main menu.

Published: 2006-04-25 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-1999 is rated High Exploit Risk (63.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 9.15%, 95th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2006-1999

EDB-ID Source Kind Published Link
1709 exploit_db edb 2006-04-23 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2006-1999

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 13.81% 9.15% -4.67%
2 2025-04-15 12.17% 13.81% +1.64%
3 2025-03-30 — 12.17% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-1999

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2006-1999

OS Trackers for CVE-2006-1999

vendor priority summary link
gentoo normal CVE-2006-1999: 1 GLSA(s) (200609-03), 1 atom(s) (games-simulation/openttd); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2006-1999

Affected software / configurations for CVE-2006-1999

Vendor Product Version Raw CPE
openttd openttd 0.4.7 cpe:2.3:a:openttd:openttd:0.4.7:*:*:*:*:*:*:*

References for CVE-2006-1999

cvelogic Threat Intelligence