Vulnerability Snapshot
CVE-2025-62864 is rated CRITICAL — exploitation is trivial or already observed in the wild and impact is severe. Patch immediately, not on the next maintenance window.
Affected technology: ampereone_a192-32m_firmware, ampereone_a192-32m, ampereone_a192-26m_firmware, ampereone_a192-26m, ampereone_a160-28m_firmware, plus 5 other product variants.
Executive Summary
Ampere AmpereOne AC03 devices before 3.5.9.3, AmpereOne AC04 devices before 4.4.5.2, and AmpereOne M devices before 5.4.5.1 allow an incorrectly formed SMC call to UEFI-MM MMCommunicate service that could result in an out-of-bounds write within the UEFI-MM Secure Partition context.
Why It Matters
CVE-2025-62864 is rated CRITICAL severity, requiring immediate attention from security teams.
CVSS Base Score: 9.8/10
Affected Technologies
Vendors: amperecomputing
Products: ampereone_a192-32m_firmware, ampereone_a192-32m, ampereone_a192-26m_firmware, ampereone_a192-26m, ampereone_a160-28m_firmware, ampereone_a160-28m, ampereone_a144-33m_firmware, ampereone_a144-33m, ampereone_a144-26m_firmware, ampereone_a144-26m, ampereone_a96-36m_firmware, ampereone_a96-36m, ampereone_a96-36x_firmware, ampereone_a96-36x, ampereone_a128-34x_firmware, ampereone_a128-34x, ampereone_a144-24x_firmware, ampereone_a144-24x, ampereone_a144-27x_firmware, ampereone_a144-27x, ampereone_a160-28x_firmware, ampereone_a160-28x, ampereone_a192-26x_firmware, ampereone_a192-26x, ampereone_a192-32x_firmware, ampereone_a192-32x
🛡️What Defenders Should Check
Use Vulnios to continuously monitor your exposure to CVE-2025-62864 and similar vulnerabilities.
References & Sources
How Vulnios Detects This
Vulnios scans for this vulnerability using Trivy and Grype for SBOM-based CVE matching and Vulnios CVE feed continuous monitoring against your asset inventory. Run a scan against your environment to see whether you are exposed; findings are linked back to the original CVE record so triage starts with the patch path already known.
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Affected Products
Sources
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- Critical Vulnerability: CVE-2025-62863 — amperecomputing — ampereone_a192-32m_firmware, ampereone_a192-32m
Frequently Asked Questions
What is CVE-2025-62864?
CVE-2025-62864 is a critical-severity vulnerability tracked under the Common Vulnerabilities and Exposures program. Ampere AmpereOne AC03 devices before 3.5.9.3, AmpereOne AC04 devices before 4.4.5.2, and AmpereOne M devices before 5.4.5.1 allow an incorrectly formed SMC call to UEFI-MM MMCommunicate service that c
Am I affected?
Check whether your environment runs ampereone_a192-32m_firmware, ampereone_a192-32m, ampereone_a192-26m_firmware, ampereone_a192-26m, ampereone_a160-28m_firmware. If you operate any of those, treat yourself as in scope until you have evidence otherwise. A Vulnios scan will identify the exact assets carrying the affected version.
How urgent is the response?
Critical: do not wait for your normal patch cycle. Verify exposure today, apply the vendor patch immediately, and add detection rules for any post-exploit indicators.
How do I remediate?
Apply the vendor patch listed in the upstream advisory linked under Sources. If the patch is not yet available, follow the vendor-supplied workaround (often a config flag or feature disable) and add detections for the published exploit pattern in your SIEM. Re-scan after the patch lands to confirm the finding clears.
Where can I track exploitation activity?
Watch CISA's Known Exploited Vulnerabilities catalog for CVE-2025-62864. Cross-reference with public exploit databases and your own SIEM/IDS for indicator-of-compromise patterns. Vulnios tracks KEV status automatically and surfaces it on the asset findings view.
How does Vulnios help with this?
Vulnios continuously cross-references your asset inventory against the live CVE feed (NVD, vendor advisories, CISA KEV, and curated OSINT). When a new CVE matches your environment, you get a prioritized finding with the severity, KEV status, exploit-prediction (EPSS), and a direct path to the vendor patch. You can start a free scan from the homepage.
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