Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2008-4126

18
FAUCET Score

CVE-2008-4126 describes a DNS spoofing vulnerability in PyDNS (python-dns) versions prior to 2.3.1-5 on Debian GNU/Linux. The vulnerability stems from the software's failure to use random source ports for DNS requests and random transaction IDs for retries, making it easier for remote attackers to inject malicious DNS responses. With a CVSS score of 6.4, this vulnerability is of medium severity, requiring low attack complexity and potentially leading to partial integrity and availability impacts. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3.1-4CPE matchmatch criteria
cpe:2.3:a:debian:python-dns:*:*:*:*:*:*:*:*
2.3.0-1CPE matchmatch criteria
cpe:2.3:a:debian:python-dns:2.3.0-1:*:*:*:*:*:*:*
2.3.0-2CPE matchmatch criteria
cpe:2.3:a:debian:python-dns:2.3.0-2:*:*:*:*:*:*:*
2.3.0-3CPE matchmatch criteria
cpe:2.3:a:debian:python-dns:2.3.0-3:*:*:*:*:*:*:*
2.3.0-4CPE matchmatch criteria
cpe:2.3:a:debian:python-dns:2.3.0-4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.4MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:P

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.19%
Probability of exploitation in next 30 days
EPSS Percentile
80.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0219 is in the 70th percentile among its peer group of 23,690 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2008-4126Moderate

python-pydns uses insecure DNS source ports

Sep 11, 2008

References

bugs.debian.org / cgi-bin/bugreport.cgi
packages.debian.org / changelogs/pool/main/p/python-dns/python-dns_2.3.3-1/changelog
openwall.com / lists/oss-security/2008/09/11/1
openwall.com / lists/oss-security/2008/09/16/4