PatchTheCVEc1-ultra firmware vulnerabilities and fixes
Recent CVEs affecting c1-ultra firmware, with upgrade or downgrade steps. 2 tracked.
Also searched as: c1 ultra firmware, c1-ultrafirmware.
c1-ultra firmware has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 0. Most recent: 2026-01-14. Highest priority: CVE-2025-0647 (score 29/100).
- CVE-2025-0647 HIGH 7.9 MITIGATE MITIGATE In certain Arm CPUs, a CPP RCTX instruction executed on one Processing Element (PE) may inhibit TLB invalidati
- CVE-2024-7881 MEDIUM 5.1 MITIGATE MITIGATE An unprivileged context can trigger a data memory-dependent prefetch engine to fetch the contents of a privile
FAQ
How do I fix c1-ultra firmware vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is c1-ultra firmware being exploited right now?
None of the tracked c1-ultra firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which c1-ultra firmware CVE should I patch first?
CVE-2025-0647 currently ranks highest (29/100): In certain Arm CPUs, a CPP RCTX instruction executed on one Processing Element (PE) may inhibit TLB invalidati.