PT-2026-34445 · Isc+1 · Bind+1

Vitaly Simonovich · Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-33608

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions BIND (affected versions not specified)

Description An attacker can send a notify request that causes a new secondary domain to be added to the bind backend. This process leads the backend to update its configuration to an invalid state, resulting in a denial of service where the backend is unable to run upon the next restart and requires manual intervention to resolve.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-33608

Affected Products

Bind

Powerdns Authoritative Server

References · 10

• https://cve.org/CVERecord?id=CVE-2026-33608 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-33608 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-33608 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-33608 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-33608 · Vendor Advisory
• https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33608 · Security Note
• https://twitter.com/CVEnew/status/2046979934736777459 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2046991708743700986 · Twitter Post
• https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-05.html#incomplete-domain-name-sanitization-during-bind-autosecondary-zone-transfer · Note