CVE-2020-7952Public exploit

Code execution or crash via crafted map

Published Jan 27, 2020 · Updated Aug 4, 2024

Memory corruption in rendersystemdx9.dll in Valve Dota 2 before 7.23f allows remote attackers to execute code or crash the client. The faulty address calculation reads through an attacker-influenced pointer; the reproducer causes an access violation, while controlled registers enable code execution. The victim must join an attacker-hosted server or custom game so the client automatically downloads and processes the malicious map.

CVSS severity7.8
High
EPSS probability1.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in rendersystemdx9.dll in Valve Dota 2 before 7.23f allows remote attackers to execute code or crash the client. The faulty address calculation reads through an attacker-influenced pointer; the reproducer causes an access violation, while controlled registers enable code execution. The victim must join an attacker-hosted server or custom game so the client automatically downloads and processes the malicious map.

The record

CVE
CVE-2020-7952
Published
Jan 27, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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