CVE-2025-55242
Published: 04 September 2025
Summary
CVE-2025-55242 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Microsoft Xbox Gaming Services. Its CVSS base score is 6.5 (Medium).
Operationally, ranked in the top 16.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2025-55242 is an information disclosure vulnerability affecting Xbox, classified under CWE-200 as exposure of sensitive information to an unauthorized actor. The flaw permits an attacker to obtain confidential data over a network connection, reflected in its CVSS 3.1 score of 6.5 with an attack vector of network, low complexity, no required privileges, and required user interaction, resulting in high impact to confidentiality while leaving integrity and availability unaffected.
An unauthorized remote attacker can exploit the issue by sending crafted requests that trigger the disclosure of sensitive information from the Xbox component, provided the victim performs the necessary interaction such as accessing a malicious link or resource.
The official advisory published by Microsoft at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55242 addresses the vulnerability and is the primary source for any available patches or configuration guidance.
EPSS for the CVE remains flat at a peak and current value of 0.0177 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-26871
Vulnerability details
Exposure of sensitive information to an unauthorized actor in Xbox allows an unauthorized attacker to disclose information over a network.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Automated marking applies security attributes to system outputs, making it harder for attackers to exploit unmarked sensitive information leading to unauthorized exposure.
Proper attribute retention and permitted-value enforcement limits unauthorized actors from accessing sensitive information lacking correct labels.
Prevents unauthorized exposure of sensitive information by prohibiting untrusted external systems from processing or storing it.
By enforcing authorization matching prior to sharing, the control reduces the risk of exposing sensitive information to unauthorized actors.
Review and removal of nonpublic information from publicly accessible systems directly prevents exposure of sensitive data to unauthorized actors.
Data mining protection mechanisms detect and block unauthorized bulk extraction of sensitive data, directly mitigating exposure to unauthorized actors.
Literacy training teaches users to recognize and avoid actions that result in unauthorized exposure of sensitive information.
Retaining and monitoring training records confirms personnel have completed privacy and security awareness training on handling sensitive data, reducing the chance of unauthorized exposure due to lack of knowledge.