CVE-2018-12270

5.4 mediumEPSS 0.9%

Medium (5.4) in valvesoftware steam client. EPSS 0.9% chance of exploitation in the next 30 days.

In Valve Steam 1528829181 BETA, it is possible to perform a homograph / homoglyph attack to create fake URLs in the client, which may trick users into visiting unintended web sites.

Severity

CVSS 3.0

5.4 medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2019-05-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

valvesoftware:steam_client

References

https://github.com/VixusFoxy/CVE/wiki/CVE-2018-12270
https://github.com/VixusFoxy/CVE/wiki/CVE-2018-12270

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