kbrain

CVE-2008-4126

MEDIUM · CVSS 6.4EPSS 2.2%EU EUVD

PyDNS (aka python-dns) before 2.3.1-5 in Debian GNU/Linux does not use random source ports for DNS requests and does not use random transaction IDs for DNS retries, which makes it easier for remote attackers to spoof DNS responses, a different vulnerability than CVE-2008-1447. NOTE: this vulnerability exists because of an incomplete fix for CVE-2008-4099.

Key facts

CVSS score
6.4 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:L/Au:N/C:N/I:P/A:P
Weakness (CWE)
CWE-16
EPSS score
2.2% (83th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2008-4109)
Published
September 18, 2008
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2008-4109 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

  • debian / linux
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns
  • debian / python-dns

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain