Intel R Processors
Monthly
Privilege escalation in Intel Processors operating within Ring 0 environments - kernel, hypervisor, and bare-metal OS - allows an authorized attacker already holding high-privilege access to cross isolation boundaries and achieve high confidentiality and integrity impact on subsequent systems such as hypervisors or co-located virtual machines. The CVSS 4.0 vector (AV:L/AC:H/AT:P/PR:H/SC:H/SI:H) confirms the attack is local, high-complexity, and gated behind existing privileged access plus special internal knowledge of processor internals, significantly limiting the exploitable population. No public exploit code and no CISA KEV listing exist at time of analysis, making current real-world risk primarily theoretical but relevant to hardened multi-tenant and virtualized datacenter environments.
Privilege escalation in Intel processor microcode stems from improper handling of overlap between protected memory ranges at the Ring 0 hypervisor privilege level, tracked as CVE-2026-20760 and EUVD-2026-56489. Exploitation requires local, low-privilege access to a system running an affected Intel processor, allowing an authorized adversary to escalate privileges or disrupt hypervisor availability without user interaction. Intel has published advisory INTEL-SA-01441 covering this issue; no active exploitation (CISA KEV) or public proof-of-concept has been identified at time of analysis, though the hypervisor-level attack surface warrants priority treatment in virtualized environments.
Improper access control within Ring 3 (user application space) of Intel processors permits privilege escalation from authenticated local user-level access to higher system privilege levels, with high confidentiality and integrity impact on the vulnerable system. Exploitation demands local access, low-privilege authentication, high attack complexity, and specialized internal knowledge of Intel processor microarchitecture internals - substantially narrowing the realistic attacker population. No public exploit code has been identified and no CISA KEV listing exists at time of analysis, consistent with a threat relevant primarily to sophisticated, targeted adversaries.
Transient execution information disclosure in Intel processors allows unprivileged guest VM code to leak sensitive data from co-resident workloads by exploiting shared microarchitectural predictor state during VMX non-root operation. Confidentiality impact is rated high at both the vulnerable-system and subsequent-system level, indicating potential cross-VM or host-to-guest data leakage consistent with Spectre-class side-channel behavior. No public exploit has been identified at time of analysis, EPSS sits at the 3rd percentile, and CISA SSVC rates exploitation as none - but the cross-boundary confidentiality impact makes this relevant to any multi-tenant virtualized environment running affected Intel silicon.
Privilege escalation in Intel Processors operating within Ring 0 environments - kernel, hypervisor, and bare-metal OS - allows an authorized attacker already holding high-privilege access to cross isolation boundaries and achieve high confidentiality and integrity impact on subsequent systems such as hypervisors or co-located virtual machines. The CVSS 4.0 vector (AV:L/AC:H/AT:P/PR:H/SC:H/SI:H) confirms the attack is local, high-complexity, and gated behind existing privileged access plus special internal knowledge of processor internals, significantly limiting the exploitable population. No public exploit code and no CISA KEV listing exist at time of analysis, making current real-world risk primarily theoretical but relevant to hardened multi-tenant and virtualized datacenter environments.
Privilege escalation in Intel processor microcode stems from improper handling of overlap between protected memory ranges at the Ring 0 hypervisor privilege level, tracked as CVE-2026-20760 and EUVD-2026-56489. Exploitation requires local, low-privilege access to a system running an affected Intel processor, allowing an authorized adversary to escalate privileges or disrupt hypervisor availability without user interaction. Intel has published advisory INTEL-SA-01441 covering this issue; no active exploitation (CISA KEV) or public proof-of-concept has been identified at time of analysis, though the hypervisor-level attack surface warrants priority treatment in virtualized environments.
Improper access control within Ring 3 (user application space) of Intel processors permits privilege escalation from authenticated local user-level access to higher system privilege levels, with high confidentiality and integrity impact on the vulnerable system. Exploitation demands local access, low-privilege authentication, high attack complexity, and specialized internal knowledge of Intel processor microarchitecture internals - substantially narrowing the realistic attacker population. No public exploit code has been identified and no CISA KEV listing exists at time of analysis, consistent with a threat relevant primarily to sophisticated, targeted adversaries.
Transient execution information disclosure in Intel processors allows unprivileged guest VM code to leak sensitive data from co-resident workloads by exploiting shared microarchitectural predictor state during VMX non-root operation. Confidentiality impact is rated high at both the vulnerable-system and subsequent-system level, indicating potential cross-VM or host-to-guest data leakage consistent with Spectre-class side-channel behavior. No public exploit has been identified at time of analysis, EPSS sits at the 3rd percentile, and CISA SSVC rates exploitation as none - but the cross-boundary confidentiality impact makes this relevant to any multi-tenant virtualized environment running affected Intel silicon.