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Vulnerability record · CVE-2020-14983 · published 22 June 2020

CVE-2020-14983: Chocolate-doom chocolate doom classic buffer overflow vulnerability

CChocolate Doom · Chocolate Doom

The server in Chocolate Doom 3.0.0 and Crispy Doom 5.8.0 doesn't validate the user-controlled num_players value, leading to a buffer overflow. A malicious user can overwrite the server's stack.

9.8 CVSS 3.1 Critical EPSS 2.2% · top 17.8% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score, v2 7.5
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The server in Chocolate Doom 3.0.0 and Crispy Doom 5.8.0 doesn't validate the user-controlled num_players value, leading to a buffer overflow. A malicious user can overwrite the server's stack.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00002.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00012.html Mailing ListThird Party Advisory
https://github.com/chocolate-doom/chocolate-doom/issues/1293 ExploitPatchThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00002.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00012.html Mailing ListThird Party Advisory
https://github.com/chocolate-doom/chocolate-doom/issues/1293 ExploitPatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-14983), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.