CVE-2019-19905

Name: CVE-2019-19905
Creator: NVD / NIST
Published: 2019-12-19T18:15:12.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.38%

Last modified Jun 17, 2026

CVE-2019-19905 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. NetHack 3.6.x before 3.6.4 is prone to a buffer overflow vulnerability when reading very long lines from configuration files. This affects systems that have NetHack installed suid/sgid, and shared systems that allow users to upload their own configuration files.. EPSS estimates a 3.38% chance of exploitation in the next 30 days.

Description

NetHack 3.6.x before 3.6.4 is prone to a buffer overflow vulnerability when reading very long lines from configuration files. This affects systems that have NetHack installed suid/sgid, and shared systems that allow users to upload their own configuration files.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

3.38%

87.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Nethack	Nethack	>= 3.6.0, < 3.6.4

References

https://bugs.debian.org/947005Issue Tracking, Patch, Third Party Advisory
https://github.com/NetHack/NetHack/commit/f001de79542b8c38b1f8e6d7eaefbbd28ab94b47Patch
https://github.com/NetHack/NetHack/commit/f4a840a48f4bcf11757b3d859e9d53cc9d5ef226Patch
https://github.com/NetHack/NetHack/security/advisories/GHSA-3cm7-rgh5-9pq5Third Party Advisory
https://nethack.org/security/Vendor Advisory
https://bugs.debian.org/947005Issue Tracking, Patch, Third Party Advisory
https://github.com/NetHack/NetHack/commit/f001de79542b8c38b1f8e6d7eaefbbd28ab94b47Patch
https://github.com/NetHack/NetHack/commit/f4a840a48f4bcf11757b3d859e9d53cc9d5ef226Patch
https://github.com/NetHack/NetHack/security/advisories/GHSA-3cm7-rgh5-9pq5Third Party Advisory
https://nethack.org/security/Vendor Advisory

Timeline

Published: Dec 19, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19905?

How severe is CVE-2019-19905?

CVE-2019-19905 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.38% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19905?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-19905?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST