Skip to main content

CISA issues alert on Clevo UEFI firmware Boot Guard key exposure

Source Decision Insights Threat Desk Published November 26, 2025 Companies 2
Human View Machine View

2 companies named across 5 categories, one of 436 articles referencing Cybersecurity and Infrastructure Security Agency (CISA). Previous coverage: CISA issues alert on DNS rebinding affecting browser CORS policies (Nov 2025).

Companies mentioned

Best suited for

Persona
Security Operations Leader
Decision stage
Which to buy
Adoption curve
Early Majority
Industry
Information Technology / Software & Services / Software / Design & Creative Software

Our classification, not the publisher's statement. Best suited for, not only for.

Clevo's UEFI firmware update packages contained private keys linked to its Intel Boot Guard implementation, presenting risks to devices utilizing this security feature. Exposure of these keys allows potential signing of unauthorized firmware, threatening the pre-boot UEFI environment integrity.

The vulnerability is identified as CVE-2025-11577 and affects versions of Clevo UEFI software containing embedded Boot Guard private keys. Intel Boot Guard is a hardware-rooted security technology verifying the Initial Boot Block (IBB) to prevent untrusted firmware execution during early boot stages, prior to UEFI initialization. The private keys were found in Clevo’s publicly released UEFI software executables that form part of the Boot Guard trust chain. This key exposure impacts not only Clevo-branded devices but may extend to other manufacturers incorporating Clevo firmware. Intel Boot Guard functions at an earlier phase than UEFI Secure Boot, which validates firmware later during the boot sequence and Operating System (OS) handoff.

The exploitation scenario involves an adversary with the capability to write to system flash storage, either through direct physical access or a privileged firmware update mechanism. Utilizing the leaked private keys, such an attacker could sign and deploy malicious firmware trusted under Boot Guard’s security checks. This trust would compromise the device’s UEFI firmware, enabling persistent and covert control over affected systems.

Clevo has withdrawn the compromised software packages that included the leaked keys; however, there are no announced public remediation measures available at this time. Users of devices running Clevo-based firmware, including systems from other original equipment manufacturers embedding this firmware, are affected.

It is advised that users evaluate their exposure to vulnerable firmware versions, maintain vigilance for unauthorized firmware alterations, and ensure firmware updates are sourced only from legitimate and verified providers.

The initial discovery and responsible disclosure of this issue were conducted by the Binarly Research Team, with reporting contributions from Thierry Laurion. Documentation of the vulnerability was prepared by Vijay Sarvepalli.

Blog post, originally published by Vijay Sarvepalli at kb.cert.org.

Mentions

Structured data (JSON-LD)

The schema.org markup this page publishes for search engines and AI agents, exactly as they read it.

[
  {
    "@context": "https://schema.org",
    "@id": "https://decisioninsights.ai/#website",
    "@type": "WebSite",
    "name": "Decision Insights",
    "potentialAction": {
      "@type": "SearchAction",
      "target": {
        "@type": "EntryPoint",
        "urlTemplate": "https://decisioninsights.ai/search/?q={search_term_string}&submit=1"
      }
    },
    "publisher": {
      "@id": "https://decisioninsights.ai/#organization"
    },
    "url": "https://decisioninsights.ai"
  },
  {
    "@context": "https://schema.org",
    "@id": "https://decisioninsights.ai/#organization",
    "@type": "Organization",
    "contactPoint": {
      "@type": "ContactPoint",
      "contactType": "customer support",
      "email": "[email protected]"
    },
    "description": "Decision Insights is a Registry of technology companies, open source projects, and industry terms, built for people and for AI agents that need sourced, structured information.",
    "logo": {
      "@type": "ImageObject",
      "url": "https://wiretap-cdn-assets.nyc3.cdn.digitaloceanspaces.com/decision-insights/[email protected]"
    },
    "name": "Decision Insights",
    "parentOrganization": {
      "@type": "Organization",
      "name": "Wiretap Labs",
      "sameAs": [
        "https://www.linkedin.com/company/wiretap-labs",
        "https://www.crunchbase.com/organization/wiretap-labs"
      ],
      "url": "https://wiretaplabs.com"
    },
    "publishingPrinciples": "https://decisioninsights.ai/standards/",
    "sameAs": [
      "https://www.linkedin.com/company/decisioninsights"
    ],
    "url": "https://decisioninsights.ai"
  },
  {
    "@context": "https://schema.org",
    "@type": "BreadcrumbList",
    "itemListElement": [
      {
        "@type": "ListItem",
        "item": "https://decisioninsights.ai",
        "name": "Decision Insights",
        "position": 1
      },
      {
        "@type": "ListItem",
        "item": "https://decisioninsights.ai/records/",
        "name": "Records",
        "position": 2
      },
      {
        "@type": "ListItem",
        "item": "https://decisioninsights.ai/cisa-issues-alert-on-clevo-uefi-firmware-boot-guard-key-exposure/",
        "name": "CISA issues alert on Clevo UEFI firmware Boot Guard key exposure",
        "position": 3
      }
    ]
  },
  {
    "@context": "https://schema.org",
    "@id": "https://decisioninsights.ai/cisa-issues-alert-on-clevo-uefi-firmware-boot-guard-key-exposure/#blogposting",
    "@type": "BlogPosting",
    "about": {
      "@id": "https://decisioninsights.ai/registry/department-of-homeland-security/cybersecurity-and-infrastructure-security-agency-cisa/#organization",
      "@type": "Organization",
      "mainEntityOfPage": "https://decisioninsights.ai/registry/department-of-homeland-security/cybersecurity-and-infrastructure-security-agency-cisa/",
      "name": "Cybersecurity and Infrastructure Security Agency (CISA)"
    },
    "articleSection": [
      "Cybersecurity"
    ],
    "audience": [
      {
        "@type": "Audience",
        "additionalType": "Persona",
        "audienceType": "Security Operations Leader"
      },
      {
        "@type": "Audience",
        "additionalType": "Adoption curve",
        "audienceType": "Early Majority"
      },
      {
        "@type": "Audience",
        "additionalType": "Industry",
        "audienceType": "Information Technology / Software & Services / Software / Design & Creative Software"
      }
    ],
    "author": {
      "@id": "https://decisioninsights.ai/author/decision-insights-threat-desk/#person",
      "@type": "Person",
      "name": "Decision Insights Threat Desk",
      "url": "https://decisioninsights.ai/author/decision-insights-threat-desk/"
    },
    "dateModified": "2026-08-23T15:03:37-06:00",
    "datePublished": "2025-11-26T01:27:36-07:00",
    "description": "CISA reports Clevo UEFI firmware containing leaked Boot Guard private keys that allow unauthorized firmware signing on affected devices.",
    "headline": "CISA issues alert on Clevo UEFI firmware Boot Guard key exposure",
    "isBasedOn": {
      "@type": "CreativeWork",
      "author": {
        "@type": "Person",
        "name": "Vijay Sarvepalli"
      },
      "sourceOrganization": {
        "@id": "https://decisioninsights.ai/registry/department-of-homeland-security/#organization",
        "@type": "Organization",
        "mainEntityOfPage": "https://decisioninsights.ai/registry/department-of-homeland-security/",
        "name": "Department of Homeland Security"
      },
      "url": "https://kb.cert.org/vuls/id/538470"
    },
    "keywords": [
      "Firmware",
      "Operating System",
      "Software",
      "Vulnerabilities"
    ],
    "mainEntityOfPage": {
      "@id": "https://decisioninsights.ai/cisa-issues-alert-on-clevo-uefi-firmware-boot-guard-key-exposure/",
      "@type": "WebPage",
      "sdDatePublished": "2026-08-23",
      "sdPublisher": {
        "@id": "https://decisioninsights.ai/#organization"
      }
    },
    "mentions": [
      {
        "@id": "https://decisioninsights.ai/registry/department-of-homeland-security/cybersecurity-and-infrastructure-security-agency-cisa/#organization",
        "@type": "Organization",
        "mainEntityOfPage": "https://decisioninsights.ai/registry/department-of-homeland-security/cybersecurity-and-infrastructure-security-agency-cisa/",
        "name": "Cybersecurity and Infrastructure Security Agency (CISA)"
      },
      {
        "@id": "https://decisioninsights.ai/registry/intel/#organization",
        "@type": "Organization",
        "mainEntityOfPage": "https://decisioninsights.ai/registry/intel/",
        "name": "Intel Corporation"
      }
    ],
    "publisher": {
      "@id": "https://decisioninsights.ai/#organization"
    }
  },
  {
    "@context": "https://schema.org",
    "@id": "https://decisioninsights.ai/author/decision-insights-threat-desk/#person",
    "@type": "Person",
    "description": "CISA advisories, vendor security bulletins, and CVE disclosures, summarized into sourced briefs. Produced under our Standards & Methodology.",
    "name": "Decision Insights Threat Desk",
    "sameAs": [
      "https://www.linkedin.com/showcase/decisioninsights/"
    ],
    "url": "https://decisioninsights.ai/author/decision-insights-threat-desk/"
  }
]

Is this your company? Get structured data for your own pages