CVE-2025-10263: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Arm C1-Ultra
Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A76 & A76A may allow writes to resources owned by a higher exception level.
AI Analysis
Technical Summary
This vulnerability is a concurrency issue classified as CWE-362 (Race Condition) in various Arm CPU cores. It allows improper synchronization that may permit writes to resources controlled by a higher exception level, potentially undermining privilege boundaries within the processor architecture. The vulnerability affects a broad range of Arm cores as listed, but no specific affected software versions or microcode revisions are provided. There is no CVSS score or detailed impact metrics available. No official remediation or patch has been disclosed by Arm as of the publication date.
Potential Impact
The vulnerability could allow unauthorized writes to resources owned by higher exception levels, which may lead to privilege escalation or compromise of secure processor states. However, the exact impact and exploitability remain unclear due to lack of detailed technical or exploit information. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until official fixes or mitigations are published by Arm, no specific remediation steps can be recommended. Monitor Arm's security advisories for updates.
CVE-2025-10263: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Arm C1-Ultra
Description
Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A76 & A76A may allow writes to resources owned by a higher exception level.
CVSS v3.1
Score 9.1critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a concurrency issue classified as CWE-362 (Race Condition) in various Arm CPU cores. It allows improper synchronization that may permit writes to resources controlled by a higher exception level, potentially undermining privilege boundaries within the processor architecture. The vulnerability affects a broad range of Arm cores as listed, but no specific affected software versions or microcode revisions are provided. There is no CVSS score or detailed impact metrics available. No official remediation or patch has been disclosed by Arm as of the publication date.
Potential Impact
The vulnerability could allow unauthorized writes to resources owned by higher exception levels, which may lead to privilege escalation or compromise of secure processor states. However, the exact impact and exploitability remain unclear due to lack of detailed technical or exploit information. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until official fixes or mitigations are published by Arm, no specific remediation steps can be recommended. Monitor Arm's security advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arm
- Date Reserved
- 2025-09-11T08:50:36.018Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a27e6ab8dd33fbd8514c95e
Added to database: 6/9/2026, 10:10:51 AM
Last enriched: 6/9/2026, 10:56:43 AM
Last updated: 6/10/2026, 5:09:02 AM
Views: 10
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