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Fencer Vulns
medium 4.3

CVE-2007-2930 json

The (1) NSID_SHUFFLE_ONLY and (2) NSID_USE_POOL PRNG algorithms in ISC BIND 8 before 8.4.7-P1 generate predictable DNS query identifiers wh…

published 2007-09-12 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2922

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.6%
EPSS 7.6% chance of exploitation in 30 days, percentile 94%
public exploits
2
Exploit-DB

Summary

The (1) NSID_SHUFFLE_ONLY and (2) NSID_USE_POOL PRNG algorithms in ISC BIND 8 before 8.4.7-P1 generate predictable DNS query identifiers when sending outgoing queries such as NOTIFY messages when answering questions as a resolver, which allows remote attackers to poison DNS caches via unknown vectors. NOTE: this issue is different from CVE-2007-2926.

Patch / fix

Timeline

  1. First public exploit (EDB-30536)
  2. Published

Exploit prediction

7.58% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-30536 ISC BIND 8 - Remote Cache Poisoning (2) remote, 2007-08-27
  • EDB-30535 ISC BIND 8 - Remote Cache Poisoning (1) remote, 2007-08-27

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

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.