CVE catalog
CVE-2025-30195
pdns-recursor: CVE-2025-30195
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.78% · Oct 25, 2026
An attacker can publish a zone containing specific Resource Record Sets. Processing and caching results for these sets can lead to an illegal memory accesses and crash of the Recursor, causing a denial of service. The remedy is: upgrade to the patched 5.2.1 version. We would like to thank Volodymyr Ilyin for bringing this issue to our attention.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pdns-recursor | sid | 5.4.9-1 | fixed |
| Debian | pdns-recursor | forky | 5.4.8-1 | fixed |
| Debian | pdns-recursor | trixie | 5.2.13-0+deb13u1 | fixed |
| Debian | pdns-recursor | trixie-security | 5.2.13-0+deb13u1 | fixed |
| Debian | pdns-recursor | bookworm | 4.8.8-1+deb12u1 | not affected |
| Debian | pdns-recursor | bookworm-security | 4.8.8-1+deb12u1 | not affected |
| Ubuntu | pdns-recursor | pro | 4.4.2-3 | vulnerable |
| Ubuntu | pdns-recursor | pro | 4.6.0-1ubuntu1 | vulnerable |
| Ubuntu | pdns-recursor | pro | 4.6.0-1ubuntu1+esm1 | vulnerable |
| Ubuntu | pdns-recursor | 24.04 | 4.9.0-2 | vulnerable |
| Ubuntu | pdns-recursor | 24.04 | 4.9.1-4 | vulnerable |
| Ubuntu | pdns-recursor | 24.04 | 4.9.2-1 | vulnerable |
| Ubuntu | pdns-recursor | 24.04 | 4.9.2-1build1 | vulnerable |
| Ubuntu | pdns-recursor | 24.04 | 4.9.2-2 | vulnerable |
| Ubuntu | pdns-recursor | 24.04 | 4.9.3-1 | vulnerable |
| Ubuntu | pdns-recursor | 24.04 | 4.9.3-1build2 | vulnerable |
| Ubuntu | pdns-recursor | 24.04 | 4.9.3-1build3 | vulnerable |
| Ubuntu | pdns-recursor | 25.10 | 5.2.0-5 | vulnerable |
| Ubuntu | pdns-recursor | 25.10 | 5.2.2-1 | vulnerable |
| Ubuntu | pdns-recursor | 25.10 | 5.2.2-2 | vulnerable |
| Ubuntu | pdns-recursor | 25.10 | 5.2.4-2 | vulnerable |
| Ubuntu | pdns-recursor | 25.10 | 5.2.4-2build2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pdns-recursor | source | sid | 5.2.1-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns-recursor | source | forky | 5.2.1-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns-recursor | source | trixie | 5.2.1-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns-recursor | source | bookworm | Not affected | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [pdns-recursor]Not affected
Details (4)
4.8.8-1+deb12u1· amd64 · bookwormNot affected
dsa · pdns-recursor · debian · bookworm
4.8.8-1+deb12u1· arm64 · bookwormNot affected
dsa · pdns-recursor · debian · bookworm
4.8.8-1+deb12u1· amd64 · bookworm-securityNot affected
dsa · pdns-recursor · debian · bookworm
4.8.8-1+deb12u1· arm64 · bookworm-securityNot affected
dsa · pdns-recursor · debian · bookworm
[Debian 13 (Trixie)]
- [pdns-recursor]Fixed
Details (4)
5.2.11-0+deb13u1· amd64 · trixieFixed · Fixed:
5.2.1-1dsa · pdns-recursor · debian · 13
5.2.11-0+deb13u1· arm64 · trixieFixed · Fixed:
5.2.1-1dsa · pdns-recursor · debian · 13
5.2.13-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
5.2.1-1dsa · pdns-recursor · debian · 13
5.2.13-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
5.2.1-1dsa · pdns-recursor · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-30195]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-30195]
- [https://security-tracker.debian.org/tracker/CVE-2025-30195]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-30195.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0722.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]