CVE-2026-33611 | PowerDNS Authoritative up to 4.9.13/5.0.3 REST API integer overflow

VDB-358958 · CVE-2026-33611 · GCVE-0-2026-33611 POWERDNS AUTHORITATIVE UP TO 4.9.13/5.0.3 REST API INTEGER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 0.50+ Summaryinfo A vulnerability described as problematic has been identified in PowerDNS Authoritative up to 4.9.13/5.0.3. The affected element is an unknown function of the component REST API. Such manipulation leads to integer overflow. This vulnerability is listed as CVE-2026-33611. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended. Detailsinfo A vulnerability, which was classified as problematic, has been found in PowerDNS Authoritative up to 4.9.13/5.0.3. Affected by this issue is an unknown code block of the component REST API. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is integrity, and availability. CVE summarizes: An operator allowed to use the REST API can cause the Authoritative server to produce invalid HTTPS or SVCB record data, which can in turn cause LMDB database corruption, if using the LMDB backend. The weakness was presented by Tibs. The advisory is available at docs.powerdns.com. This vulnerability is handled as CVE-2026-33611 since 03/23/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not available. 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: 5.1 VulDB Meta Temp Score: 5.1 VulDB Base Score: 3.8 VulDB Temp Score: 3.7 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.5 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: Integer overflow CWE: CWE-190 / CWE-189 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: Tibs Status: Confirmed CVE: CVE-2026-33611 (🔒) GCVE (CVE): GCVE-0-2026-33611 GCVE (VulDB): GCVE-100-358958 Entryinfo Created: 04/22/2026 17:27 Changes: 04/22/2026 17:27 (64) Complete: 🔍 Cache ID: 99:CC9:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸