PowerDNS Recursor 3.1.3 and earlier allows remote attackers to cause a denial of service…
Priority LOW 32Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
PowerDNS Recursor 3.1.3 and earlier allows remote attackers to cause a denial of service (resource exhaustion and application crash) via a CNAME record with a zero TTL, which triggers an infinite loop.
Why it matters now
EPSS 0.05967 93rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* | up to 3.1.3 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:2.0_rc1:*:*:*:*:*:*:* | 2.0_rc1 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:2.9.15:*:*:*:*:*:*:* | 2.9.15 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:2.9.16:*:*:*:*:*:*:* | 2.9.16 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:2.9.17:*:*:*:*:*:*:* | 2.9.17 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:2.9.18:*:*:*:*:*:*:* | 2.9.18 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:3.0.1:*:*:*:*:*:*:* | 3.0.1 | Vulnerable | PowerDNS |
| cpe:2.3:a:powerdns:recursor:3.1:*:*:*:*:*:*:* | 3.1 | Vulnerable | PowerDNS |
- cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* Versions up to 3.1.3 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:2.0_rc1:*:*:*:*:*:*:* Versions 2.0_rc1 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:2.9.15:*:*:*:*:*:*:* Versions 2.9.15 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:2.9.16:*:*:*:*:*:*:* Versions 2.9.16 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:2.9.17:*:*:*:*:*:*:* Versions 2.9.17 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:2.9.18:*:*:*:*:*:*:* Versions 2.9.18 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:3.0.1:*:*:*:*:*:*:* Versions 3.0.1 Vulnerable ·PowerDNS
- cpe:2.3:a:powerdns:recursor:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·PowerDNS
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-4252
- 2026-10-03 Alias added: GHSA-mx38-c6fm-chc9
References
Advisory 1
Other 1
More PowerDNS Recursor vulnerabilities
- TI-2023-27571 Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related… CVSS 3.1HIGH 7.5
- TI-2023-27773 The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance… CVSS 3.1HIGH 7.5
- TI-2015-01678 The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x before 3.6.3, and… CVSS 2.0HIGH 7.8
- TI-2018-12065 Out-of-bounds read in [UNKNOWN] pdns-recursor CVSS 3.0HIGH 7.5
- TI-2017-11091 NULL pointer dereference in PowerDNS pdns-recursor CVSS 3.0HIGH 7.5
- TI-2014-07065 PowerDNS Recursor before 3.6.2 does not limit delegation chaining, which allows remote… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2006-4252 · CVE Program
- CVE-2006-4252 · NVD
- FIRST EPSS
- GHSA-mx38-c6fm-chc9 · GitHub Advisory Database · CC BY 4.0
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