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🛡️ CVE-2025-0647 — c1-premium-firmware

🟠 CVSS 7.9 — High ✅ No Known Exploit CWE-226 NVD
7.9
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: High — administrative rights are needed first.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Changed — a successful attack reaches components beyond the vulnerable one.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: None.

Weakness class

CVE-2025-0647 is classified as CWE-226: Sensitive Information in Resource Not Removed Before Reuse. The product releases a resource such as memory or a file so that it can be made available for reuse, but it does not clear or "zeroize" the information contained in the resource before the product performs a critical state transition or makes the…

Affected software

CVE-2025-0647 is recorded against 11 packages.

  • c1-premium-firmware
  • c1-ultra-firmware
  • cortex-a710-firmware
  • cortex-x2-firmware
  • cortex-x3-firmware
  • cortex-x4-firmware
  • cortex-x925-firmware
  • neoverse-n2-firmware
  • neoverse-v2-firmware
  • neoverse-v3-firmware
  • neoverse-v3ae-firmware

Timeline and source

Published on 14 January 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

developer.arm.com
graph.volerion.com

Other advisories for this package

c1-premium-firmware has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-226: Sensitive Information in Resource Not Removed Before Reuse) in other software:

Details

Severity HIGH
CVSS Score 7.9
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CWE CWE-226
Public Exploit ✅ No
Source NVD
Published 2026-01-14
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
c1-premium-firmware
c1-ultra-firmware
cortex-a710-firmware
cortex-x2-firmware
cortex-x3-firmware
cortex-x4-firmware
cortex-x925-firmware
neoverse-n2-firmware
neoverse-v2-firmware
neoverse-v3-firmware
neoverse-v3ae-firmware

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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