CVE-2025-0647In 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 shareabili…
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It affects arm c1-ultra_firmware and 10 other products. Add what you run to find out whether that includes you.
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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 retain stale TLB entries which should have been invalidated by the TLBI.
- CVSS
- 7.9 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
- Weakness (CWE)
- CWE-226
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
arm c1-ultra_firmware arm:c1-ultra_firmware | all versions | NVD |
arm c1-premium_firmware arm:c1-premium_firmware | all versions | NVD |
arm cortex-a710_firmware arm:cortex-a710_firmware | all versions | NVD |
arm cortex-x2_firmware arm:cortex-x2_firmware | all versions | NVD |
arm cortex-x3_firmware arm:cortex-x3_firmware | all versions | NVD |
arm cortex-x4_firmware arm:cortex-x4_firmware | all versions | NVD |
arm cortex-x925_firmware arm:cortex-x925_firmware | all versions | NVD |
arm neoverse-v2_firmware arm:neoverse-v2_firmware | all versions | NVD |
arm neoverse-v3_firmware arm:neoverse-v3_firmware | all versions | NVD |
arm neoverse-v3ae_firmware arm:neoverse-v3ae_firmware | all versions | NVD |
arm neoverse-n2_firmware arm:neoverse-n2_firmware | all versions | NVD |
References
- https://developer.arm.com/documentation/111546vendor-advisory
- https://graph.volerion.com/view?ID=CVE-2025-0647third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.