CVE-2025-30187
lowpriority · track · 0EPSS 0.003 · 21 %ileDEEUEPSS · scored 2026-10-27
In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- Fixeddnsdist-0:1.9.11-150700.3.6.1.aarch64 as component of SUSE Linux Enterprise Module for Basesystem 15 SP7suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-150700.3.6.1.ppc64le as component of SUSE Linux Enterprise Module for Basesystem 15 SP7suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-150700.3.6.1.s390x as component of SUSE Linux Enterprise Module for Basesystem 15 SP7suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-150700.3.6.1.x86_64 as component of SUSE Linux Enterprise Module for Basesystem 15 SP7suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.aarch64 as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.aarch64 as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.ppc64le as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.ppc64le as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.s390x as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.s390x as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.x86_64 as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.x86_64 as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.aarch64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.ppc64le as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.s390x as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Fixeddnsdist-0:1.9.11-160000.1.1.x86_64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (9)
Products and version ranges known to be affected.
advisories (4)
Vendor and ecosystem advisories describing this.
- SUSE-SU-2026:0888-1Security update for dnsdist2026-03-13csaf · suse_csafDE
Security update for dnsdist
- SUSE-SU-2026:20995-1Security update for dnsdist2026-04-02csaf · suse_csafDE
Security update for dnsdist
- WID-SEC-W-2025-2112DNSdist: Schwachstelle ermöglicht Denial of ServiceDeutsch2025-09-23csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in DNSdist ausnutzen, um einen Denial of Service Angriff durchzuführen.
- openSUSE-SU-2026:20461-1Security update for dnsdist2026-04-02csaf · suse_csafDE
Security update for dnsdist
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-30187cnnvd
- https://vigilance.fr/vulnerability/DNSdist-overload-via-DoH-Exchange-48358cnnvd
- https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.htmlcnnvd
- https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.htmlenisa_euvd
- http://www.openwall.com/lists/oss-security/2025/09/18/1nvd
- https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.htmlnvd
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