CVE-2015-4016

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-05-20 · updated 2026-06-17
Weakness: CWE-20

Description

The client detection protocol in Valve Steam allows remote attackers to cause a denial of service (process crash) via a crafted response to a broadcast packet.

Affected products

Valvesoftware Steam Client: before 2015-05-13 — fixed in 2015-05-13

How to fix

Upgrade to a fixed version: Valvesoftware Steam Client 2015-05-13. Check the vendor advisory for mitigations.

References

http://store.steampowered.com/news/16801/
http://www.securityfocus.com/bid/74735
http://www.zerodayinitiative.com/advisories/ZDI-15-233/
http://store.steampowered.com/news/16801/
http://www.securityfocus.com/bid/74735
http://www.zerodayinitiative.com/advisories/ZDI-15-233/

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