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CVE-2023-27971

Critical Vulnerability: CVE-2023-27971 — hp — laserjet_pro_m304-m305_w1a46a_firmware, laserjet_pro_m304-m305_w1a46a

Certain HP LaserJet Pro print products are potentially vulnerable to Buffer Overflow and/or Elevation of Privilege.

Thursday, June 25, 2026hpVulnios Threat Intelligence
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Vulnerability Snapshot

CVE-2023-27971 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: laserjet_pro_m304-m305_w1a46a_firmware, laserjet_pro_m304-m305_w1a46a, laserjet_pro_m304-m305_w1a47a_firmware, laserjet_pro_m304-m305_w1a47a, laserjet_pro_m304-m305_w1a48a_firmware, plus 5 other product variants.

Executive Summary

Certain HP LaserJet Pro print products are potentially vulnerable to Buffer Overflow and/or Elevation of Privilege.

Why It Matters

CVE-2023-27971 is rated CRITICAL severity, requiring immediate attention from security teams.

CVSS Base Score: 9.8/10

Affected Technologies

Vendors: hp

Products: laserjet_pro_m304-m305_w1a46a_firmware, laserjet_pro_m304-m305_w1a46a, laserjet_pro_m304-m305_w1a47a_firmware, laserjet_pro_m304-m305_w1a47a, laserjet_pro_m304-m305_w1a48a_firmware, laserjet_pro_m304-m305_w1a48a, laserjet_pro_m304-m305_w1a66a_firmware, laserjet_pro_m304-m305_w1a66a, laserjet_pro_m404-m405_93m22a_firmware, laserjet_pro_m404-m405_93m22a, laserjet_pro_m404-m405_w1a51a_firmware, laserjet_pro_m404-m405_w1a51a, laserjet_pro_m404-m405_w1a52a_firmware, laserjet_pro_m404-m405_w1a52a, laserjet_pro_m404-m405_w1a53a_firmware, laserjet_pro_m404-m405_w1a53a, laserjet_pro_m404-m405_w1a56a_firmware, laserjet_pro_m404-m405_w1a56a, laserjet_pro_m404-m405_w1a57a_firmware, laserjet_pro_m404-m405_w1a57a, laserjet_pro_m404-m405_w1a58a_firmware, laserjet_pro_m404-m405_w1a58a, laserjet_pro_m404-m405_w1a59a_firmware, laserjet_pro_m404-m405_w1a59a, laserjet_pro_m404-m405_w1a60a_firmware, laserjet_pro_m404-m405_w1a60a, laserjet_pro_m404-m405_w1a63a_firmware, laserjet_pro_m404-m405_w1a63a, laserjet_pro_m453-m454_w1y40a_firmware, laserjet_pro_m453-m454_w1y40a, laserjet_pro_m453-m454_w1y41a_firmware, laserjet_pro_m453-m454_w1y41a, laserjet_pro_m453-m454_w1y43a_firmware, laserjet_pro_m453-m454_w1y43a, laserjet_pro_m453-m454_w1y44a_firmware, laserjet_pro_m453-m454_w1y44a, laserjet_pro_m453-m454_w1y45a_firmware, laserjet_pro_m453-m454_w1y45a, laserjet_pro_m453-m454_w1y46a_firmware, laserjet_pro_m453-m454_w1y46a, laserjet_pro_m453-m454_w1y47a_firmware, laserjet_pro_m453-m454_w1y47a, laserjet_pro_mfp_m428-m429_f_w1a29a_firmware, laserjet_pro_mfp_m428-m429_f_w1a29a, laserjet_pro_mfp_m428-m429_f_w1a30a_firmware, laserjet_pro_mfp_m428-m429_f_w1a30a, laserjet_pro_mfp_m428-m429_f_w1a32a_firmware, laserjet_pro_mfp_m428-m429_f_w1a32a, laserjet_pro_mfp_m428-m429_f_w1a34a_firmware, laserjet_pro_mfp_m428-m429_f_w1a34a, laserjet_pro_mfp_m428-m429_f_w1a35a_firmware, laserjet_pro_mfp_m428-m429_f_w1a35a, laserjet_pro_mfp_m428-m429_f_w1a38a_firmware, laserjet_pro_mfp_m428-m429_f_w1a38a, laserjet_pro_mfp_m428-m429_w1a28a_firmware, laserjet_pro_mfp_m428-m429_w1a28a, laserjet_pro_mfp_m428-m429_w1a31a_firmware, laserjet_pro_mfp_m428-m429_w1a31a, laserjet_pro_mfp_m428-m429_w1a33a_firmware, laserjet_pro_mfp_m428-m429_w1a33a, w1a75a_firmware, w1a75a, w1a76a_firmware, w1a76a, w1a77a_firmware, w1a77a, w1a78a_firmware, w1a78a, w1a79a_firmware, w1a79a, w1a80a_firmware, w1a80a, w1a81a_firmware, w1a81a, w1a82a_firmware, w1a82a

🛡️What Defenders Should Check

  • Check if you are affected — Review your asset inventory for products listed in CVE-2023-27971.
  • 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-2023-27971 and similar vulnerabilities.

    References & Sources

  • https://support.hp.com/us-en/document/ish_7919962-7920003-16/hpsbpi03839
  • https://support.hp.com/us-en/document/ish_7919962-7920003-16/hpsbpi03839

    • 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

    laserjet_pro_m304-m305_w1a46a_firmwarelaserjet_pro_m304-m305_w1a46alaserjet_pro_m304-m305_w1a47a_firmwarelaserjet_pro_m304-m305_w1a47alaserjet_pro_m304-m305_w1a48a_firmwarelaserjet_pro_m304-m305_w1a48alaserjet_pro_m304-m305_w1a66a_firmwarelaserjet_pro_m304-m305_w1a66alaserjet_pro_m404-m405_93m22a_firmwarelaserjet_pro_m404-m405_93m22a

    Sources

    Related Threat Alerts

    Frequently Asked Questions

    What is CVE-2023-27971?

    CVE-2023-27971 is a critical-severity vulnerability tracked under the Common Vulnerabilities and Exposures program. Certain HP LaserJet Pro print products are potentially vulnerable to Buffer Overflow and/or Elevation of Privilege.

    Am I affected?

    Check whether your environment runs laserjet_pro_m304-m305_w1a46a_firmware, laserjet_pro_m304-m305_w1a46a, laserjet_pro_m304-m305_w1a47a_firmware, laserjet_pro_m304-m305_w1a47a, laserjet_pro_m304-m305_w1a48a_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-2023-27971. 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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