CVE-2020-15007

Name: CVE-2020-15007
Creator: NVD / NIST
Published: 2020-06-24T11:15:12.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.30%

Last modified Jun 17, 2026

CVE-2020-15007 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A buffer overflow in the M_LoadDefaults function in m_misc.c in id Tech 1 (aka Doom engine) allows arbitrary code execution via an unsafe usage of fscanf, because it does not limit the number of characters to be read in a format argument.. EPSS estimates a 2.30% chance of exploitation in the next 30 days.

Description

A buffer overflow in the M_LoadDefaults function in m_misc.c in id Tech 1 (aka Doom engine) allows arbitrary code execution via an unsafe usage of fscanf, because it does not limit the number of characters to be read in a format argument.

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

2.30%

81.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Idsoftware	Tech 1	All versions
Doom Vanille Project	Doom Vanille	< 671

References

https://github.com/AXDOOMER/doom-vanille/commit/8a6d9a02fa991a91ff90ccdc73b5ceabaa6cb9ecPatch, Third Party Advisory
https://twitter.com/notrevenant/status/1268654123903340544Third Party Advisory
https://github.com/AXDOOMER/doom-vanille/commit/8a6d9a02fa991a91ff90ccdc73b5ceabaa6cb9ecPatch, Third Party Advisory
https://twitter.com/notrevenant/status/1268654123903340544Third Party Advisory

Timeline

Published: Jun 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15007?

How severe is CVE-2020-15007?

CVE-2020-15007 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.30% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15007?

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-2020-15007?

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

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Source: NVD / NIST