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CVE-2025-0647

HIGHCVSS 7.9/10EPSS 0.15%

Last modified

CVE-2025-0647 is a high-severity vulnerability rated 7.9/10 on the CVSS scale. 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.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.9/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

EPSS Probability
0.15%

4.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ArmC1-Ultra FirmwareAll versions
ArmC1-Premium FirmwareAll versions
ArmCortex-A710 FirmwareAll versions
ArmCortex-X2 FirmwareAll versions
ArmCortex-X3 FirmwareAll versions
ArmCortex-X4 FirmwareAll versions
ArmCortex-X925 FirmwareAll versions
ArmNeoverse-V2 FirmwareAll versions
ArmNeoverse-V3 FirmwareAll versions
ArmNeoverse-V3ae FirmwareAll versions
ArmNeoverse-N2 FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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 retain stale TLB entries which should have been invalidated by the TLBI.
How severe is CVE-2025-0647?
CVE-2025-0647 has a CVSS score of 7.9/10 (HIGH severity). The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.
How do I fix CVE-2025-0647?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-0647?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST