CVE-2026-33608 | PowerDNS Authoritative up to 4.9.13/5.0.3 denial of service

VDB-358957 · CVE-2026-33608 · GCVE-0-2026-33608 POWERDNS AUTHORITATIVE UP TO 4.9.13/5.0.3 DENIAL OF SERVICE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.5 $0-$5k 0.50+ Summaryinfo A vulnerability marked as problematic has been reported in PowerDNS Authoritative up to 4.9.13/5.0.3. Impacted is an unknown function. This manipulation causes denial of service. This vulnerability is tracked as CVE-2026-33608. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component. Detailsinfo A vulnerability classified as problematic was found in PowerDNS Authoritative up to 4.9.13/5.0.3. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is: 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. The weakness was disclosed by Vitaly Simonovich. The advisory is shared at docs.powerdns.com. This vulnerability is known as CVE-2026-33608 since 03/23/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue. Upgrading to version 4.9.14 or 5.0.4 eliminates this vulnerability. Productinfo Type Domain Name Software Vendor PowerDNS Name Authoritative Version 4.9.0 4.9.1 4.9.2 4.9.3 4.9.4 4.9.5 4.9.6 4.9.7 4.9.8 4.9.9 4.9.10 4.9.11 4.9.12 4.9.13 5.0.0 5.0.1 5.0.2 5.0.3 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.6 VulDB Meta Temp Score: 5.5 VulDB Base Score: 3.7 VulDB Temp Score: 3.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.4 CNA Vector: 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Denial of service CWE: CWE-404 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Authoritative 4.9.14/5.0.4 Timelineinfo 03/23/2026 CVE reserved 04/22/2026 +29 days Advisory disclosed 04/22/2026 +0 days VulDB entry created 04/22/2026 +0 days VulDB entry last update Sourcesinfo Advisory: docs.powerdns.com Researcher: Vitaly Simonovich Status: Confirmed CVE: CVE-2026-33608 (🔒) GCVE (CVE): GCVE-0-2026-33608 GCVE (VulDB): GCVE-100-358957 Entryinfo Created: 04/22/2026 17:27 Changes: 04/22/2026 17:27 (64) Complete: 🔍 Cache ID: 99:B0F:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸