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Vulnerability record · CVE-2026-33610 · published 22 April 2026

CVE-2026-33610: Powerdns authoritative uncontrolled resource consumption vulnerability

Powerdns · Authoritative

A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it.

7.5 CVSS 3.1 High EPSS 0.73% · top 47.6% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score
0.73%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html Broken LinkVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-33608Powerdns authoritative code injection vulnerabilityAn 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 confi…EPSS 0.59%9.8CVE-2020-24698Powerdns authoritative double free vulnerabilityAn issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker might…EPSS 3.2%8.6CVE-2026-42000Powerdns authoritative command injection vulnerabilityInsufficient Validation of Names During AXFREPSS 0.54%8.1CVE-2020-24696Powerdns authoritative race condition vulnerabilityAn issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker can t…EPSS 1.4%7.8CVE-2015-5470Powerdns authoritative vulnerabilityThe label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x…EPSS 11%7.8CVE-2015-1868PowerDNS label decompression self-referential name denial of serviceThe label decompression code in PowerDNS Recursor (3.5.x, 3.6.x before 3.6.3, 3.7.x before 3.7.2) and Authoritative Server (3.2.x, 3.3.x before 3.3.2…EPSS 82%analysed7.5CVE-2026-42001Powerdns authoritative uncontrolled resource consumption vulnerabilityInsufficient Validation of Autoprimary SOA QueriesEPSS 0.80%7.5CVE-2026-42002Powerdns authoritative vulnerabilityConcurrency and locking defects in GSS-TSIGEPSS 0.58%

Source: NIST National Vulnerability Database (record CVE-2026-33610), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.