# CVE-2026-33608: pdns: An attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes...

CVE-2026-33608 is fixed in pdns on 1 platform, first by DEBIAN-CVE-2026-33608, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-33608
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0038
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 22, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | pdns Debian 13.5 (trixie) | 4.9.14-0+deb13u1 | [DEBIAN-CVE-2026-33608](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33608.md) | May 15, 2026 |
| Linux | pdns Debian 14 | 5.0.4-1 | [DEBIAN-CVE-2026-33608](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33608.md) | May 15, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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