CVE-2026-33596 | PowerDNS DNSdist up to 1.9.12/2.0.3 integer overflow

VDB-358960 · CVE-2026-33596 · GCVE-0-2026-33596 POWERDNS DNSDIST UP TO 1.9.12/2.0.3 INTEGER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.0 $0-$5k 0.74+ Summaryinfo A vulnerability classified as problematic was found in PowerDNS DNSdist up to 1.9.12/2.0.3. This affects an unknown function. Executing a manipulation can lead to integer overflow. This vulnerability is registered as CVE-2026-33596. The attack requires access to the local network. No exploit is available. Upgrading the affected component is advised. Detailsinfo A vulnerability has been found in PowerDNS DNSdist up to 1.9.12/2.0.3 and classified as problematic. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes: A client might theoretically be able to cause a mismatch between queries sent to a backend and the received responses by sending a flood of perfectly timed queries that are routed to a TCP-only or DNS over TLS backend. The weakness was published by ylwango613. The advisory is shared for download at dnsdist.org. This vulnerability was named CVE-2026-33596 since 03/23/2026. The exploitation appears to be difficult. The attack needs to approached within the local network. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. Upgrading to version 1.9.13 or 2.0.4 eliminates this vulnerability. Productinfo Type Domain Name Software Vendor PowerDNS Name DNSdist Version 1.9.0 1.9.1 1.9.2 1.9.3 1.9.4 1.9.5 1.9.6 1.9.7 1.9.8 1.9.9 1.9.10 1.9.11 1.9.12 2.0.0 2.0.1 2.0.2 2.0.3 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.1 VulDB Meta Temp Score: 3.0 VulDB Base Score: 3.1 VulDB Temp Score: 3.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 3.1 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: Partially 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: DNSdist 1.9.13/2.0.4 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: dnsdist.org Researcher: ylwango613 Status: Confirmed CVE: CVE-2026-33596 (🔒) GCVE (CVE): GCVE-0-2026-33596 GCVE (VulDB): GCVE-100-358960 Entryinfo Created: 04/22/2026 17:29 Changes: 04/22/2026 17:29 (63) Complete: 🔍 Cache ID: 99:BDC:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸