CVE-2006-4251 json
Buffer overflow in PowerDNS Recursor 3.1.3 and earlier might allow remote attackers to execute arbitrary code via a malformed TCP DNS query…
published 2006-11-14 19 y ago modified 2026-06-16 4 mo ago also EUVD-2006-4239
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 8.8%
- EPSS 8.8% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
Buffer overflow in PowerDNS Recursor 3.1.3 and earlier might allow remote attackers to execute arbitrary code via a malformed TCP DNS query that prevents Recursor from properly calculating the TCP DNS query length.
Patch / fix
- pdns Debian 14, Debian 13, Debian 12 2.9.20-4
- pdns-recursor Debian 14, Debian 13, Debian 12 3.1.4-1
debian advisories DEBIAN-CVE-2006-4251
- securityfocus.com/bid/21037 patch
- secunia.com/advisories/22824 advisory
- doc.powerdns.com/powerdns-advisory-2006-01.html advisory
Exploit prediction
8.79% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
secunia.com
/advisories/22824
third-party-advisory, patch, vendor-advisory
-
securityfocus.com
/bid/21037
vdb-entry, patch
-
doc.powerdns.com
/powerdns-advisory-2006-01.html
patch, vendor-advisory
-
debian.org
/security/2006/dsa-1211
vendor-advisory
-
lists.suse.com
/archive/suse-security-announce/2006-Nov/0007.html
vendor-advisory
-
vupen.com
/english/advisories/2006/4484
vdb-entry
-
secunia.com
/advisories/22903
third-party-advisory
-
secunia.com
/advisories/22976
third-party-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/30270
vdb-entry
Sources
- CVE List CVE-2006-4251
- NVD CVE-2006-4251
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