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CVE-2017-5691

Critical Vulnerability: CVE-2017-5691 — intel — nuc7i3bnk_bios, nuc7i3bnk

Incorrect check in Intel processors from 6th and 7th Generation Intel Core Processor Families, Intel Xeon E3-1500M v5 and v6 Product Families, and Intel Xeon E3-1200 v5 and v6 Product Families allows compromised system firmware to impact SGX security via incorrect early system state.

Wednesday, May 13, 2026intelVulnios Threat Intelligence
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Vulnerability Snapshot

CVE-2017-5691 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: nuc7i3bnk_bios, nuc7i3bnk, nuc7i5bnk_bios, nuc7i5bnk, nuc7i7bnh_bios, plus 5 other product variants.

Executive Summary

Incorrect check in Intel processors from 6th and 7th Generation Intel Core Processor Families, Intel Xeon E3-1500M v5 and v6 Product Families, and Intel Xeon E3-1200 v5 and v6 Product Families allows compromised system firmware to impact SGX security via incorrect early system state.

Why It Matters

CVE-2017-5691 is rated CRITICAL severity, requiring immediate attention from security teams.

CVSS Base Score: 9/10

Affected Technologies

Vendors: intel

Products: nuc7i3bnk_bios, nuc7i3bnk, nuc7i5bnk_bios, nuc7i5bnk, nuc7i7bnh_bios, nuc7i7bnh, stk2mv64cc_bios, stk2mv64cc, stk2m3w64cc_bios, stk2m3w64cc, nuc6i7kyk_bios, nuc6i7kyk, nuc6i3syk_bios, nuc6i3syk, nuc6i5syk_bios, nuc6i5syk, r1304sposhor_bios, r1304sposhor, r1304sposhorr_bios, r1304sposhorr, r1208sposhorr_bios, r1208sposhorr, lr1304spcfg1r_bios, lr1304spcfg1r, r1208sposhor_bios, r1208sposhor, s1200spsr_bios, s1200spsr, s1200spor_bios, s1200spor, lr1304spcfg1_bios, lr1304spcfg1, s1200spl_bios, s1200spl, s1200spo_bios, s1200spo, s1200sps_bios, s1200sps, r1304sposhbn_bios, r1304sposhbn, s1200splr_bios, s1200splr, r1304sposhbnr_bios, r1304sposhbnr

🛡️What Defenders Should Check

  • Check if you are affected — Review your asset inventory for products listed in CVE-2017-5691.
  • Apply available patches — Visit vendor advisories for the latest security updates.
  • Monitor for exploitation — Check your SIEM/IDS logs for related indicators.

    • Use Vulnios to continuously monitor your exposure to CVE-2017-5691 and similar vulnerabilities.

    References & Sources

  • https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesb3p03767en_us
  • https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00076&languageid=en-fr
  • https://support.lenovo.com/us/en/product_security/LEN-15184
  • https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesb3p03767en_us
  • https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00076&languageid=en-fr
  • https://support.lenovo.com/us/en/product_security/LEN-15184

    • 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

    nuc7i3bnk_biosnuc7i3bnknuc7i5bnk_biosnuc7i5bnknuc7i7bnh_biosnuc7i7bnhstk2mv64cc_biosstk2mv64ccstk2m3w64cc_biosstk2m3w64cc

    Sources

    Related Threat Alerts

    Frequently Asked Questions

    What is CVE-2017-5691?

    CVE-2017-5691 is a critical-severity vulnerability tracked under the Common Vulnerabilities and Exposures program. Incorrect check in Intel processors from 6th and 7th Generation Intel Core Processor Families, Intel Xeon E3-1500M v5 and v6 Product Families, and Intel Xeon E3-1200 v5 and v6 Product Families allows

    Am I affected?

    Check whether your environment runs nuc7i3bnk_bios, nuc7i3bnk, nuc7i5bnk_bios, nuc7i5bnk, nuc7i7bnh_bios. 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-2017-5691. 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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