What is CVE-2026-33598?

CVE-2026-33598 is a medium-severity vulnerability in Powerdns Dnsdist. CVSS score: 4.8/10. Published 2026-04-22.

How severe is CVE-2026-33598?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Powerdns Dnsdist

CVE-2026-33598

A cached crafted response can cause an out-of-bounds read if custom Lua code calls getDomainListByAddress() or getAddressListByDomain() on a packet cache.

EPSS: 0.000 (0.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L.

Affected products

Powerdns Dnsdist — versions 1.9.0, 2.0.0

References

www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html

Frequently asked questions

What is CVE-2026-33598?: CVE-2026-33598 is a medium-severity vulnerability in Powerdns Dnsdist. CVSS score: 4.8/10. Published 2026-04-22.
How severe is CVE-2026-33598?: Medium severity. CVSS v3 base score is 4.8 out of 10.