AUGUST 4, 2026
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Case File

CVE-2021-30481

HIGH · CVSS 8 EPSS 3.50%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-04-10 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.0. It may be remotely exploitable. Exploitation may require the attacker to be authenticated.

CVE
CVE-2021-30481
Severity
HIGH
CVSS
8
EPSS
3.50%

Original NVD Description

Valve Steam before 2021-04-17, when a Source engine game is installed, allows remote authenticated users to execute arbitrary code because of a buffer overflow that occurs for a Steam invite after one click.

Related CVEs

Other vulnerabilities affecting the same vendor(s)