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Insufficient granularity of access control in the OOB-MSM for some Intel(R) Xeon(R) 6 Scalable processors may allow a privileged user to potentially enable escalation of privilege via adjacent access.

CVE-2025-22839 is a vulnerability identified in Intel Xeon 6 Scalable processors, specifically related to the Out-Of-Band Management Subsystem Module (OOB-MSM). The issue stems from insufficient granularity in access control mechanisms within the OOB-MSM, which is responsible for managing system-level functions outside the main CPU execution environment. This flaw allows a user who already possesses high-level privileges on the system to potentially escalate their privileges further by exploiting adjacent access capabilities within the OOB-MSM. The vulnerability does not require user interaction but does require that the attacker already have privileged access, making it a post-compromise escalation vector. The CVSS 4.0 base score of 7.3 reflects a high severity, with attack vector being adjacent (local network or logical proximity), high attack complexity, and requiring privileges. The impact on confidentiality, integrity, and availability is high, particularly affecting the integrity and confidentiality of system management functions. No known exploits have been reported in the wild yet, and no patches have been linked in the provided data, indicating that mitigation may currently rely on vendor updates and access control policies. This vulnerability is particularly critical for environments relying heavily on Intel Xeon 6 Scalable processors, such as enterprise servers, cloud providers, and data centers, where OOB management is commonly used for remote system administration and monitoring.

Detailed information about CVE-2025-22839: Escalation of Privilege in Intel(R) Xeon(R) 6 Scalable processors affecting null Intel(R) Xeon(R) 6 Scalable processo

CVE-2025-22839: Escalation of Privilege in Intel(R) Xeon(R) 6 Scalable processors - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-22839: Escalation of Privilege in Intel(R) Xeon(R) 6 Scalable processors

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