Shodan
Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-19538

The BLOCKED access control list items that are evaluated to deny access on the the proxy protocol port can be bypassed completely when connecting over TCP or TLS and sending the query twice on connection that is kept open.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 22.8%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-19538
  • Nlnetlabs » Nsd » Version: 4.10.0
    cpe:2.3:a:nlnetlabs:nsd:4.10.0
  • Nlnetlabs » Nsd » Version: 4.10.1
    cpe:2.3:a:nlnetlabs:nsd:4.10.1
  • Nlnetlabs » Nsd » Version: 4.11.0
    cpe:2.3:a:nlnetlabs:nsd:4.11.0
  • Nlnetlabs » Nsd » Version: 4.11.1
    cpe:2.3:a:nlnetlabs:nsd:4.11.1
  • Nlnetlabs » Nsd » Version: 4.12.0
    cpe:2.3:a:nlnetlabs:nsd:4.12.0
  • Nlnetlabs » Nsd » Version: 4.12.1
    cpe:2.3:a:nlnetlabs:nsd:4.12.1
  • Nlnetlabs » Nsd » Version: 4.13.0
    cpe:2.3:a:nlnetlabs:nsd:4.13.0
  • Nlnetlabs » Nsd » Version: 4.14.0
    cpe:2.3:a:nlnetlabs:nsd:4.14.0
  • Nlnetlabs » Nsd » Version: 4.14.1
    cpe:2.3:a:nlnetlabs:nsd:4.14.1
  • Nlnetlabs » Nsd » Version: 4.14.2
    cpe:2.3:a:nlnetlabs:nsd:4.14.2
  • Nlnetlabs » Nsd » Version: 4.14.3
    cpe:2.3:a:nlnetlabs:nsd:4.14.3
  • Nlnetlabs » Nsd » Version: 4.15.0
    cpe:2.3:a:nlnetlabs:nsd:4.15.0
  • Nlnetlabs » Nsd » Version: 4.8.0
    cpe:2.3:a:nlnetlabs:nsd:4.8.0
  • Nlnetlabs » Nsd » Version: 4.9.0
    cpe:2.3:a:nlnetlabs:nsd:4.9.0
  • Nlnetlabs » Nsd » Version: 4.9.1
    cpe:2.3:a:nlnetlabs:nsd:4.9.1


Products
Pricing
Contact Us

Shodan ® - All rights reserved