Vulnerability in Arm C1-premium
CVE-2025-0647
In certain Arm CPUs, a CPP RCTX instruction executed on one Processing Element (PE) may inhibit TLB invalidation when a TLBI is issued to the PE, either by the same PE or another PE in the shareability domain. In this case, the PE may reta…
EPSS: 0.002 (4.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.9 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.
Affected products
- Arm C1-premium — versions 0
- Arm C1-premium_firmware
- Arm C1-ultra — versions 0
- Arm C1-ultra_firmware
- Arm Cortex-a710 — versions 0
- Arm Cortex-a710_firmware
- Arm Cortex-x2 — versions 0
- Arm Cortex-x2_firmware
- Arm Cortex-x3 — versions 0
- Arm Cortex-x3_firmware
Weakness classification (CWE)
References
- arm-security@arm.com (Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-0647?
- CVE-2025-0647 is a high-severity vulnerability in Arm C1-premium, classified under Sensitive Information in Resource Not Removed Before Reuse. CVSS score: 7.9/10. Published 2026-01-14.
- How severe is CVE-2025-0647?
- High severity. CVSS v3 base score is 7.9 out of 10.