p PatchFirst

CVE-2026-33608

CVE-2026-33608 · Incomplete domain name sanitization during

This page contains facts from public vulnerability sources. Check the original advisory before updating.

An attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes said backend to update its configuration to an invalid one, leading to the backend no longer able to run on the next restart, requiring manual operation to fix it.

CVSS 7.4 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • authoritative

    Versions
    • ≥ 5.0.0, < 5.0.4: Affected (semver)
    • ≥ 4.9.0, < 4.9.14: Affected (semver)

    Update to 4.9.14; Update to 5.0.4

  • pdns Debian:12

    Versions
    • 4.7.3-2
    • 4.8.0-1
    • 4.8.0-2
    • 4.8.1-1
    • 4.8.1-2
    • 4.8.2-1
    • 4.8.2-2
    • 4.8.3-1
    • 4.8.3-2
    • 4.8.3-3
    • 4.8.3-4
    • 4.9.0-1
    • 4.9.0-2
    • 4.9.1-1
    • 4.9.1-2
    • 4.9.1-3
    • 4.9.2-1
    • 4.9.2-2
    • 4.9.3-1
    • 4.9.3-2
    • 4.9.3-3
    • 4.9.4-1
    • 4.9.4-2
    • 4.9.7-1
    • 5.0.0-1
    • 5.0.0-2
    • 5.0.1-1
    • 5.0.2-1
    • 5.0.3-1
    • 5.0.4-1
    • 5.0.5-1
    • 5.0.5-2
    • 5.0.5-3
    • 5.0.5-4
    • 5.1.0-1
    • 5.1.1-1
    • 5.1.1-2
    • 5.1.1-3
    • 5.1.2-1
    • 5.1.3-1
    • 5.1.4-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns Debian:13

    Versions
    • 4.9.7-1
    Affected ranges
    • ECOSYSTEM: < 4.9.14-0+deb13u1

    Update to 4.9.14-0+deb13u1

  • pdns Debian:14

    Versions
    • 4.9.7-1
    • 5.0.0-1
    • 5.0.0-2
    • 5.0.1-1
    • 5.0.2-1
    • 5.0.3-1
    Affected ranges
    • ECOSYSTEM: < 5.0.4-1

    Update to 5.0.4-1

  • pdns Ubuntu:Pro:16.04:LTS

    Versions
    • 3.4.5-1build2
    • 3.4.6-2
    • 3.4.6-3
    • 3.4.7-1
    • 3.4.7-2
    • 4.0.0~alpha1-1
    • 4.0.0~alpha2-2
    • 4.0.0~alpha2-3
    • 4.0.0~alpha2-3build1
    • 4.0.0~alpha2-3ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns Ubuntu:Pro:18.04:LTS

    Versions
    • 4.0.4-2
    • 4.0.4-2build1
    • 4.0.5-1
    • 4.1.0-1
    • 4.1.0-2
    • 4.1.0-2build1
    • 4.1.1-1
    • 4.1.1-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns Ubuntu:Pro:20.04:LTS

    Versions
    • 4.1.6-3build1
    • 4.2.0-1
    • 4.2.1-1
    • 4.2.1-1build1
    • 4.2.1-1build2
    • 4.2.1-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns Ubuntu:Pro:22.04:LTS

    Versions
    • 4.4.1-1build1
    • 4.4.1-3
    • 4.4.1-4
    • 4.5.2-1build1
    • 4.5.3-1
    • 4.5.3-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns Ubuntu:24.04:LTS

    Versions
    • 4.8.1-1build1
    • 4.8.3-2
    • 4.8.3-2build1
    • 4.8.3-3
    • 4.8.3-4
    • 4.8.3-4build2
    • 4.8.3-4build3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns Ubuntu:25.10

    Versions
    • 4.9.4-2
    • 4.9.7-1
    • 4.9.7-1build2
    • 5.0.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns Ubuntu:26.10

    Versions
    • 5.0.2-1build1
    • 5.0.5-4
    • 5.1.0-1
    • 5.1.1-1
    • 5.1.1-2
    • 5.1.1-3
    • 5.1.2-1
    • 5.1.3-1
    • 5.1.4-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pdns Ubuntu:26.04:LTS

    Versions
    • 5.0.0-2
    • 5.0.1-1
    • 5.0.2-1
    • 5.0.2-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →