CVE-2026-33608

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.

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CVSS v3.1 Score

7.4

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS — Exploit Prediction

0.0001

Probability of exploitation

0.00%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-94 CWE-94

Affected Products

Vendor	Product	Versions
powerdns	authoritative	4.9.0 — 4.9.14
powerdns	authoritative	5.0.0 — 5.0.4

References

Advisories & Patches

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html

Frequently Asked Questions

What is CVE-2026-33608? +

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. It has a CVSS v3.1 base score of 7.4 (HIGH).

How severe is CVE-2026-33608? +

CVE-2026-33608 has a CVSS v3.1 score of 7.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0001, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-33608? +

CVE-2026-33608 affects products from powerdns, specifically: authoritative. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-33608? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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