CVE-2020-7949
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.
Does this matter?
A public exploit is published in Exploit-DB and the impact is high, while EPSS rates exploitation at 4.2%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 4.17% probability · 91th percentile
- Public exploits
- 1 in Exploit-DB · first 10 February 2020
- CISA KEV
- Not listed
- Affected
- valvesoftware/dota 2
- Source
- cve@mitre.org
EPSS 4.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.