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Fencer Vulns
medium 6.4

CVE-2007-3898 json

The DNS server in Microsoft Windows 2000 Server SP4, and Server 2003 SP1 and SP2, uses predictable transaction IDs when querying other DNS…

published 2007-11-14 18 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3882

cvss
6.4
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
52.3%
EPSS 52.3% chance of exploitation in 30 days, percentile 98%
public exploits
2
Exploit-DB

Summary

The DNS server in Microsoft Windows 2000 Server SP4, and Server 2003 SP1 and SP2, uses predictable transaction IDs when querying other DNS servers, which allows remote attackers to spoof DNS replies, poison the DNS cache, and facilitate further attack vectors.

Patch / fix

Timeline

  1. First public exploit (EDB-30636)
  2. Published

Exploit prediction

52.31% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-30636 Microsoft Windows Server 2000/2003 - Recursive DNS Spoofing (2) remote, 2007-11-13
  • EDB-30635 Microsoft Windows Server 2000/2003 - Recursive DNS Spoofing (1) remote, 2007-11-13
  • securityfocus.com http://www.securityfocus.com/bid/25919 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:N/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.