CVE-2008-4099
MEDIUMEPSS 81th pctlDescription
PyDNS (aka python-dns) before 2.3.1-4 in Debian GNU/Linux does not use random source ports or transaction IDs for DNS requests, which makes it easier for remote attackers to spoof DNS responses, a different vulnerability than CVE-2008-1447.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Elevated risk: more likely to be exploited than 81% of all known CVEs.
References
Related Vulnerabilities
Other CWE-16 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2004-2687 | High | 9.3 | 88% | - | Fix |
| CVE-2009-2335 | Medium | 5.0 | 85% | - | Fix |
| CVE-2006-3677 | High | 7.5 | 78% | - | Fix |
| CVE-2011-4404 | Medium | 5.0 | 60% | - | - |
| CVE-2006-0848 | Medium | 5.1 | 58% | - | - |
| CVE-2007-3898 | Medium | 6.4 | 52% | - | - |
Common questions
How do I fix CVE-2008-4099?
No published fix for CVE-2008-4099 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2008-4099 being actively exploited?
Not that we know of. CVE-2008-4099 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 81% of all scored CVEs.
How severe is CVE-2008-4099?
CVE-2008-4099 has a CVSS v2 base score of 6.4, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.