VulniosVulnios
All Threat Alerts
criticalCVE Alert
CVE-2017-8816

Critical Vulnerability: CVE-2017-8816 — haxx, debian — curl, libcurl

The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application crash) or possibly have unspecified other impact via vectors involving long user and password fields.

Wednesday, April 15, 2026haxx, debianVulnios Threat Intelligence
Share:

Executive Summary

The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application crash) or possibly have unspecified other impact via vectors involving long user and password fields.

Why It Matters

CVE-2017-8816 is rated CRITICAL severity, requiring immediate attention from security teams.

CVSS Base Score: 9.8/10

EPSS (Exploit Prediction): 0.5% probability of exploitation in the next 30 days.

Affected Technologies

Vendors: haxx, debian

Products: curl, libcurl, debian_linux

🛡️What Defenders Should Check

  • Check if you are affected — Review your asset inventory for products listed in CVE-2017-8816.
  • 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-2017-8816 and similar vulnerabilities.

    References & Sources

  • http://security.cucumberlinux.com/security/details.php?id=161
  • http://www.securityfocus.com/bid/101998
  • http://www.securitytracker.com/id/1039896
  • http://www.securitytracker.com/id/1040608
  • https://access.redhat.com/errata/RHSA-2018:3558
  • https://curl.haxx.se/docs/adv_2017-12e7.html
  • https://security.gentoo.org/glsa/201712-04
  • https://www.debian.org/security/2017/dsa-4051
  • http://security.cucumberlinux.com/security/details.php?id=161
  • http://www.securityfocus.com/bid/101998

    • AI Security Advisor

    Powered by Gemini

    Get AI-powered security recommendations tailored to this specific threat — including risk assessment, detection guidance, MITRE ATT&CK mapping, and actionable remediation steps.

    Affected Products

    curllibcurldebian_linux

    Sources

    criticaldos

    Protect Your Organization

    Monitor CVEs, scan for vulnerabilities, and get real-time threat alerts — all in one platform.

    Get Started FreeFree Security ScanOSINT Dashboard

    Get instant alerts on Telegram

    Join our public channel for real-time critical CVE alerts.

    Follow @vulnios