Privilege Escalation Vulnerability in Valve Software Steam Client
CVE-2025-27998

8.4HIGH

Key Information:

Vendor

Valve Software

Status
Steam Client
Vendor
CVE Published:
21 May 2025

What is CVE-2025-27998?

A vulnerability in the Valve Software Steam Client enables attackers to escalate their privileges through the execution of a specially crafted executable or DLL. This flaw poses significant security risks, as it allows malicious entities to gain unauthorized access to user privileges within the system.

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References

https://gist.github.com/sornram9254/e8d10efcf246cc50ff3d4...

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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