CVE-2025-0647
7.9 · HIGHOverview
CVE-2025-0647 is a high-severity vulnerability affecting arm c1-ultra_firmware. It was published on January 14, 2026 and has a CVSS 3.1 base score of 7.9 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.9, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from arm. Update c1-ultra_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
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Frequently Asked Questions
What is CVE-2025-0647?
CVE-2025-0647 is a high-severity vulnerability affecting arm c1-ultra_firmware. It was published on January 14, 2026 and has a CVSS 3.1 base score of 7.9 (HIGH).
How severe is CVE-2025-0647?
This vulnerability has a CVSS 3.1 base score of 7.9, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-0647?
Check the references section for vendor advisories and patches from arm. Update c1-ultra_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-0647?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-0647 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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