CVE-2020-7949

Name: CVE-2020-7949
Creator: NVD / NIST
Published: 2020-01-27T17:15:12.34+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 4.17%

Last modified Jun 17, 2026

CVE-2020-7949 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. schemasystem.dll in Valve Dota 2 before 7.23f allows remote attackers to achieve code execution or denial of service by creating a gaming server and inviting a victim to this server, because a crafted map is mishandled during a GetValue call.. EPSS estimates a 4.17% chance of exploitation in the next 30 days.

Description

schemasystem.dll in Valve Dota 2 before 7.23f allows remote attackers to achieve code execution or denial of service by creating a gaming server and inviting a victim to this server, because a crafted map is mishandled during a GetValue call.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

4.17%

89.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Valvesoftware	Dota 2	< 7.23f

References

https://github.com/bi7s/CVE/tree/master/CVE-2020-7949Third Party Advisory
https://github.com/bi7s/CVE/tree/master/CVE-2020-7949Third Party Advisory

Timeline

Published: Jan 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7949?

How severe is CVE-2020-7949?

CVE-2020-7949 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 4.17% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7949?

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-2020-7949?

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

Scan your code now

Source: NVD / NIST