Privilege escalation in Arm C1-Premium
CVE-2025-10263
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (43.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.005 · change: -0.000
Affected products
- Arm C1-Premium — versions 0
- Arm C1-Ultra — versions 0
- Arm Cortex-A710 — versions 0
- Arm Cortex-A76 — versions 0
- Arm Cortex-A76ae — versions 0
- Arm Cortex-A77 — versions 0
- Arm Cortex-A78 — versions 0
- Arm Cortex-A78ae — versions 0
- Arm Cortex-A78c — versions 0
- Arm Cortex-X1 — versions 0
Weakness classification (CWE)
References
- developer.arm.com/documentation/112137
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2025-10263?
- CVE-2025-10263 is a critical-severity vulnerability in Arm C1-Premium, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 9.1/10. Published 2026-06-09.
- How severe is CVE-2025-10263?
- Critical severity. CVSS v3 base score is 9.1 out of 10.