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CVE-2020-3675

Critical Vulnerability: CVE-2020-3675 — qualcomm — ipq5018_firmware, ipq5018

u'Potential integer underflow while parsing Service Info and IPv6 link-local TLVs that comes as part of NDPE attribute' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking in IPQ5018, IPQ6018, IPQ8074, Kamorta, Nicobar, QCA6390, QCN7605, QCS404, QCS405, Rennell, SA415M, Saipan, SC7180, SC8180X, SDX55, SM6150, SM7150, SM8

Sunday, September 6, 2026qualcommVulnios Threat Intelligence
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Vulnerability Snapshot

CVE-2020-3675 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: ipq5018_firmware, ipq5018, ipq6018_firmware, ipq6018, ipq8074_firmware, plus 5 other product variants.

Executive Summary

u'Potential integer underflow while parsing Service Info and IPv6 link-local TLVs that comes as part of NDPE attribute' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking in IPQ5018, IPQ6018, IPQ8074, Kamorta, Nicobar, QCA6390, QCN7605, QCS404, QCS405, Rennell, SA415M, Saipan, SC7180, SC8180X, SDX55, SM6150, SM7150, SM8150, SM8250

Why It Matters

CVE-2020-3675 is rated CRITICAL severity, requiring immediate attention from security teams.

CVSS Base Score: 9.8/10

Affected Technologies

Vendors: qualcomm

Products: ipq5018_firmware, ipq5018, ipq6018_firmware, ipq6018, ipq8074_firmware, ipq8074, kamorta_firmware, kamorta, nicobar_firmware, nicobar, qca6390_firmware, qca6390, qcn7605_firmware, qcn7605, qcs404_firmware, qcs404, qcs405_firmware, qcs405, rennell_firmware, rennell, sa415m_firmware, sa415m, saipan_firmware, saipan, sc7180_firmware, sc7180, sc8180x_firmware, sc8180x, sdx55_firmware, sdx55, sm6150_firmware, sm6150, sm7150_firmware, sm7150, sm8150_firmware, sm8150, sm8250_firmware, sm8250

🛡️What Defenders Should Check

  • Check if you are affected — Review your asset inventory for products listed in CVE-2020-3675.
  • 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-2020-3675 and similar vulnerabilities.

    References & Sources

  • https://www.qualcomm.com/company/product-security/bulletins/august-2020-bulletin
  • https://www.qualcomm.com/company/product-security/bulletins/august-2020-bulletin

    • 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

    ipq5018_firmwareipq5018ipq6018_firmwareipq6018ipq8074_firmwareipq8074kamorta_firmwarekamortanicobar_firmwarenicobar

    Sources

    Related Threat Alerts

    Frequently Asked Questions

    What is CVE-2020-3675?

    CVE-2020-3675 is a critical-severity vulnerability tracked under the Common Vulnerabilities and Exposures program. u'Potential integer underflow while parsing Service Info and IPv6 link-local TLVs that comes as part of NDPE attribute' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Cons

    Am I affected?

    Check whether your environment runs ipq5018_firmware, ipq5018, ipq6018_firmware, ipq6018, ipq8074_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-2020-3675. 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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