Authoritative
Monthly
Denial of service in PowerDNS Authoritative Server (4.9.0 before 4.9.15 and 5.0.0 before 5.0.5) arises from concurrency and locking defects in the GSS-TSIG code path, allowing a remote attacker to crash or hang the server (CVSS 7.5, availability-only impact). No public exploit identified at time of analysis, and EPSS is very low (0.02%, 6th percentile), with CISA's SSVC framework rating exploitation as 'none' and technical impact as 'partial'. Vendor patches are available, and exposure is limited to deployments that have the GSS-TSIG feature enabled.
Remote denial of service in PowerDNS Authoritative Server arises from insufficient validation of SOA queries received via the Autoprimary (formerly 'supermaster') replication mechanism, allowing unauthenticated network-based attackers to disrupt service availability. The flaw carries a CVSS 7.5 (AV:N/AC:L/PR:N/UI:N) with availability-only impact, and no public exploit identified at time of analysis. The OX-reported issue is documented in PowerDNS Security Advisory 2026-06.
Denial of service in PowerDNS Authoritative DNS server (versions 4.9.0-4.9.14 and 5.0.0-5.0.4) arises from insufficient validation of names processed during AXFR zone transfers, letting a malicious or compromised primary send crafted zone data that disrupts availability. The CVSS 3.1 base score is 8.6 with a scope change (S:C) and availability-only impact (A:H), and no public exploit has been identified at time of analysis. EPSS is 0.00% and CISA SSVC rates exploitation as 'none', indicating no observed real-world attacks despite the high score.
Remote attackers can corrupt PowerDNS Authoritative Server configuration via specially crafted DNS NOTIFY requests, causing persistent denial of service requiring manual administrator intervention. The attack adds malformed secondary domains to the bind backend, rendering the configuration invalid and preventing the server from restarting. No active exploitation confirmed at time of analysis, but the network-accessible attack vector and lack of authentication requirements elevate risk for internet-facing authoritative DNS servers.
PowerDNS Authoritative Server's optional internal web server accepts crafted HTTP requests that trigger unbounded memory allocation, exhausting process memory and causing a denial of service against the DNS service. Exploitation requires low-privilege authentication (PR:L per CVSS vector) and the internal web server must be explicitly enabled - it is disabled by default, sharply limiting the real-world attack surface. No public exploit code has been identified and this vulnerability is not listed in CISA KEV.
Incorrect view selection in PowerDNS Authoritative Server when processing TCP PROXY protocol requests exposes DNS records intended for a different network segment to remote unauthenticated attackers, producing both unauthorized information disclosure and limited integrity impact. Deployments running split-horizon DNS via the Views feature alongside TCP PROXY protocol support are the specific affected population. No public exploit has been identified at time of analysis, and active exploitation has not been confirmed by CISA KEV; however, the attack concept requires no authentication and no user interaction, making it relevant wherever both features are co-deployed.
Catalog zone transfer failure in PowerDNS Authoritative can be triggered by a high-privileged remote attacker who injects insufficiently validated member zone data, causing the catalog zone transfer mechanism to abort and preventing secondary nameservers from receiving zone updates. The impact is a targeted denial-of-service against DNS zone replication infrastructure, affecting any deployment using catalog zones (RFC 9432). No public exploit has been identified at time of analysis, and the vulnerability is not listed in CISA KEV.
PowerDNS Authoritative server allows authenticated REST API operators to inject malformed HTTPS or SVCB record data, corrupting the LMDB backend database and causing service degradation or denial of availability. The vulnerability requires high-privilege REST API access and affects deployments using LMDB as the backend storage engine, with confirmed impact on data integrity and availability.
Denial of service in PowerDNS secondary servers occurs when a rogue primary server sends crafted DNS update requests that cause file descriptor exhaustion on the secondary, eventually rendering the secondary unable to process legitimate DNS queries. The attack requires network-level coordination between a compromised or attacker-controlled primary server and a target secondary server, with moderate attack complexity due to the need to establish a primary-secondary relationship. No active exploitation has been confirmed in CISA KEV at time of analysis.
Incomplete LDAP query escaping in PowerDNS Authoritative with 8bit-dns enabled allows authenticated users to enumerate internal domain subtrees through LDAP injection, leading to information disclosure of sensitive DNS zone data. The vulnerability requires valid authentication, high attack complexity due to LDAP protocol constraints, and has been reported by the vendor security team. No active exploitation data is currently available.
Denial of service in PowerDNS Authoritative, Recursor, and dnsdist via unbounded memory allocation in their internal web servers when processing specially crafted web requests. Multiple product lines are affected across several version ranges. The internal web server is disabled by default, significantly limiting real-world exposure. A vendor-released patch is available. CVSS 5.3 (low severity) with network-accessible vector but no authentication required reflects the ease of exploitation offset by the availability limitation and DoS-only impact.
Unlimited memory allocation in PowerDNS internal web server allows remote denial of service via crafted web requests. The vulnerability affects multiple PowerDNS products (dnsdist, Authoritative, and Recursor) across multiple versions, though the internal web server is disabled by default, significantly limiting real-world exposure. CVSS 5.3 reflects low attack complexity and no authentication requirements, but the default-disabled state and requirement to enable the internal web server substantially reduce practical risk.
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An issue has been found in PowerDNS Authoritative Server before 4.3.1 where an authorized user with the ability to insert crafted records into a zone might be able to leak the content of. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. This Allocation of Resources Without Limits vulnerability could allow attackers to exhaust system resources through uncontrolled allocation.
A vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.10, 4.0.8 allowing an authorized user to cause the server to exit by inserting a crafted record in a MASTER type. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.
PowerDNS Authoritative Server 4.1.0 up to 4.1.4 inclusive and PowerDNS Recursor 4.0.0 up to 4.1.4 inclusive are vulnerable to a packet cache pollution via crafted query that can lead to denial of. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
PowerDNS Authoritative Server 3.3.0 up to 4.1.4 excluding 4.1.5 and 4.0.6, and PowerDNS Recursor 3.2 up to 4.1.4 excluding 4.1.5 and 4.0.9, are vulnerable to a memory leak while parsing malformed. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 85.5% and no vendor patch available.
PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a denial of service (backend CPU consumption) via a long qname. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 37.0%.
PowerDNS (aka pdns) Authoritative Server 3.4.4 before 3.4.7 allows remote attackers to cause a denial of service (assertion failure and server crash) via crafted query packets. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.
The 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 before 3.4.5 allows remote attackers to cause a. Rated high severity (CVSS 7.8), this vulnerability is remotely exploitable, low attack complexity.
The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x before 3.6.3, and 3.7.x before 3.7.2 and Authoritative (Auth) Server 3.2.x, 3.3.x before 3.3.2, and 3.4.x before 3.4.4 allows. Rated high severity (CVSS 7.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Denial of service in PowerDNS Authoritative Server (4.9.0 before 4.9.15 and 5.0.0 before 5.0.5) arises from concurrency and locking defects in the GSS-TSIG code path, allowing a remote attacker to crash or hang the server (CVSS 7.5, availability-only impact). No public exploit identified at time of analysis, and EPSS is very low (0.02%, 6th percentile), with CISA's SSVC framework rating exploitation as 'none' and technical impact as 'partial'. Vendor patches are available, and exposure is limited to deployments that have the GSS-TSIG feature enabled.
Remote denial of service in PowerDNS Authoritative Server arises from insufficient validation of SOA queries received via the Autoprimary (formerly 'supermaster') replication mechanism, allowing unauthenticated network-based attackers to disrupt service availability. The flaw carries a CVSS 7.5 (AV:N/AC:L/PR:N/UI:N) with availability-only impact, and no public exploit identified at time of analysis. The OX-reported issue is documented in PowerDNS Security Advisory 2026-06.
Denial of service in PowerDNS Authoritative DNS server (versions 4.9.0-4.9.14 and 5.0.0-5.0.4) arises from insufficient validation of names processed during AXFR zone transfers, letting a malicious or compromised primary send crafted zone data that disrupts availability. The CVSS 3.1 base score is 8.6 with a scope change (S:C) and availability-only impact (A:H), and no public exploit has been identified at time of analysis. EPSS is 0.00% and CISA SSVC rates exploitation as 'none', indicating no observed real-world attacks despite the high score.
Remote attackers can corrupt PowerDNS Authoritative Server configuration via specially crafted DNS NOTIFY requests, causing persistent denial of service requiring manual administrator intervention. The attack adds malformed secondary domains to the bind backend, rendering the configuration invalid and preventing the server from restarting. No active exploitation confirmed at time of analysis, but the network-accessible attack vector and lack of authentication requirements elevate risk for internet-facing authoritative DNS servers.
PowerDNS Authoritative Server's optional internal web server accepts crafted HTTP requests that trigger unbounded memory allocation, exhausting process memory and causing a denial of service against the DNS service. Exploitation requires low-privilege authentication (PR:L per CVSS vector) and the internal web server must be explicitly enabled - it is disabled by default, sharply limiting the real-world attack surface. No public exploit code has been identified and this vulnerability is not listed in CISA KEV.
Incorrect view selection in PowerDNS Authoritative Server when processing TCP PROXY protocol requests exposes DNS records intended for a different network segment to remote unauthenticated attackers, producing both unauthorized information disclosure and limited integrity impact. Deployments running split-horizon DNS via the Views feature alongside TCP PROXY protocol support are the specific affected population. No public exploit has been identified at time of analysis, and active exploitation has not been confirmed by CISA KEV; however, the attack concept requires no authentication and no user interaction, making it relevant wherever both features are co-deployed.
Catalog zone transfer failure in PowerDNS Authoritative can be triggered by a high-privileged remote attacker who injects insufficiently validated member zone data, causing the catalog zone transfer mechanism to abort and preventing secondary nameservers from receiving zone updates. The impact is a targeted denial-of-service against DNS zone replication infrastructure, affecting any deployment using catalog zones (RFC 9432). No public exploit has been identified at time of analysis, and the vulnerability is not listed in CISA KEV.
PowerDNS Authoritative server allows authenticated REST API operators to inject malformed HTTPS or SVCB record data, corrupting the LMDB backend database and causing service degradation or denial of availability. The vulnerability requires high-privilege REST API access and affects deployments using LMDB as the backend storage engine, with confirmed impact on data integrity and availability.
Denial of service in PowerDNS secondary servers occurs when a rogue primary server sends crafted DNS update requests that cause file descriptor exhaustion on the secondary, eventually rendering the secondary unable to process legitimate DNS queries. The attack requires network-level coordination between a compromised or attacker-controlled primary server and a target secondary server, with moderate attack complexity due to the need to establish a primary-secondary relationship. No active exploitation has been confirmed in CISA KEV at time of analysis.
Incomplete LDAP query escaping in PowerDNS Authoritative with 8bit-dns enabled allows authenticated users to enumerate internal domain subtrees through LDAP injection, leading to information disclosure of sensitive DNS zone data. The vulnerability requires valid authentication, high attack complexity due to LDAP protocol constraints, and has been reported by the vendor security team. No active exploitation data is currently available.
Denial of service in PowerDNS Authoritative, Recursor, and dnsdist via unbounded memory allocation in their internal web servers when processing specially crafted web requests. Multiple product lines are affected across several version ranges. The internal web server is disabled by default, significantly limiting real-world exposure. A vendor-released patch is available. CVSS 5.3 (low severity) with network-accessible vector but no authentication required reflects the ease of exploitation offset by the availability limitation and DoS-only impact.
Unlimited memory allocation in PowerDNS internal web server allows remote denial of service via crafted web requests. The vulnerability affects multiple PowerDNS products (dnsdist, Authoritative, and Recursor) across multiple versions, though the internal web server is disabled by default, significantly limiting real-world exposure. CVSS 5.3 reflects low attack complexity and no authentication requirements, but the default-disabled state and requirement to enable the internal web server substantially reduce practical risk.
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An issue has been found in PowerDNS Authoritative Server before 4.3.1 where an authorized user with the ability to insert crafted records into a zone might be able to leak the content of. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. This Allocation of Resources Without Limits vulnerability could allow attackers to exhaust system resources through uncontrolled allocation.
A vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.10, 4.0.8 allowing an authorized user to cause the server to exit by inserting a crafted record in a MASTER type. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Uncontrolled Resource Consumption vulnerability could allow attackers to cause denial of service by exhausting system resources.
PowerDNS Authoritative Server 4.1.0 up to 4.1.4 inclusive and PowerDNS Recursor 4.0.0 up to 4.1.4 inclusive are vulnerable to a packet cache pollution via crafted query that can lead to denial of. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
PowerDNS Authoritative Server 3.3.0 up to 4.1.4 excluding 4.1.5 and 4.0.6, and PowerDNS Recursor 3.2 up to 4.1.4 excluding 4.1.5 and 4.0.9, are vulnerable to a memory leak while parsing malformed. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 85.5% and no vendor patch available.
PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a denial of service (backend CPU consumption) via a long qname. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 37.0%.
PowerDNS (aka pdns) Authoritative Server 3.4.4 before 3.4.7 allows remote attackers to cause a denial of service (assertion failure and server crash) via crafted query packets. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.
The 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 before 3.4.5 allows remote attackers to cause a. Rated high severity (CVSS 7.8), this vulnerability is remotely exploitable, low attack complexity.
The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x before 3.6.3, and 3.7.x before 3.7.2 and Authoritative (Auth) Server 3.2.x, 3.3.x before 3.3.2, and 3.4.x before 3.4.4 allows. Rated high severity (CVSS 7.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.