What is CVE-2025-55242?

CVE-2025-55242 is a medium-severity vulnerability in Microsoft Xbox Gaming Services, classified under Information Disclosure. CVSS score: 6.5/10. Published 2025-09-04.

How severe is CVE-2025-55242?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Information disclosure in Microsoft Xbox Gaming Services

CVE-2025-55242

Exposure of sensitive information to an unauthorized actor in Xbox allows an unauthorized attacker to disclose information over a network.

Vulnerability class: Information Disclosure

Published 2025-09-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (54.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55242 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-55242?: CVE-2025-55242 is a medium-severity vulnerability in Microsoft Xbox Gaming Services, classified under Information Disclosure. CVSS score: 6.5/10. Published 2025-09-04.
How severe is CVE-2025-55242?: Medium severity. CVSS v3 base score is 6.5 out of 10.