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Fencer Vulns
medium 4.3

CVE-2007-2926 json

ISC BIND 9 through 9.5.0a5 uses a weak random number generator during generation of DNS query ids when answering resolver questions or send…

published 2007-07-24 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2918

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
13.1%
EPSS 13.1% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

ISC BIND 9 through 9.5.0a5 uses a weak random number generator during generation of DNS query ids when answering resolver questions or sending NOTIFY messages to slave name servers, which makes it easier for remote attackers to guess the next query id and perform DNS cache poisoning.

Patch / fix

  • bind9 Debian 14, Debian 13, Debian 12 1:9.4.1-P1-1

debian advisories DEBIAN-CVE-2007-2926

  • bind RHEL 2.1 9.2.1-9.el2
  • bind RHEL 3 20:9.2.4-21.el3
  • bind RHEL 4 20:9.2.4-27.0.1.el4
  • bind RHEL 5 30:9.3.3-9.0.1.el5
  • bind-sdb RHEL 5 30:9.3.3-9.0.1.el5
  • bind-libs RHEL 3 20:9.2.4-21.el3
  • bind-libs RHEL 4 20:9.2.4-27.0.1.el4
  • bind-libs RHEL 5 30:9.3.3-9.0.1.el5

red hat advisories RHSA-2007:0740

  • bind openSUSE Tumbleweed 9.16.20-1.4

opensuse advisories openSUSE-SU-2024:10650-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-2926 updated

bind cryptographically weak query ids

  • Red Hat Desktop version 3 bind 9.2.4-21.el3, bind-libs 9.2.4-21.el3, bind-utils 9.2.4-21.el3, bind-chroot 9.2.4-21.el3 Red Hat Enterprise Linux (v. 5 server) bind 9.3.3-9.0.1.el5, bind-sdb 9.3.3-9.0.1.el5, bind-libs 9.3.3-9.0.1.el5, bind-utils 9.3.3-9.0.1.el5, bind-chroot 9.3.3-9.0.1.el5, caching-nameserver 9.3.3-9.0.1.el5 Red Hat Enterprise Linux AS (Advanced Server) version 2.1 bind 9.2.1-9.el2, bind-utils 9.2.1-9.el2 Red Hat Enterprise Linux AS version 3 bind 9.2.4-21.el3, bind-libs 9.2.4-21.el3, bind-utils 9.2.4-21.el3, bind-chroot 9.2.4-21.el3 Red Hat Enterprise Linux AS version 4 bind 9.2.4-27.0.1.el4, bind-libs 9.2.4-27.0.1.el4, bind-utils 9.2.4-27.0.1.el4, bind-chroot 9.2.4-27.0.1.el4 Red Hat Enterprise Linux Desktop (v. 5 client) bind 9.3.3-9.0.1.el5, bind-sdb 9.3.3-9.0.1.el5, bind-libs 9.3.3-9.0.1.el5, bind-utils 9.3.3-9.0.1.el5, bind-chroot 9.3.3-9.0.1.el5, caching-nameserver 9.3.3-9.0.1.el5
    +9 more products
    Red Hat Enterprise Linux Desktop version 4 bind 9.2.4-27.0.1.el4, bind-libs 9.2.4-27.0.1.el4, bind-utils 9.2.4-27.0.1.el4, bind-chroot 9.2.4-27.0.1.el4 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) bind 9.3.3-9.0.1.el5, bind-sdb 9.3.3-9.0.1.el5, bind-libs 9.3.3-9.0.1.el5, bind-utils 9.3.3-9.0.1.el5, bind-chroot 9.3.3-9.0.1.el5, caching-nameserver 9.3.3-9.0.1.el5 Red Hat Enterprise Linux ES version 2.1 bind 9.2.1-9.el2, bind-utils 9.2.1-9.el2 Red Hat Enterprise Linux ES version 3 bind 9.2.4-21.el3, bind-libs 9.2.4-21.el3, bind-utils 9.2.4-21.el3, bind-chroot 9.2.4-21.el3 Red Hat Enterprise Linux ES version 4 bind 9.2.4-27.0.1.el4, bind-libs 9.2.4-27.0.1.el4, bind-utils 9.2.4-27.0.1.el4, bind-chroot 9.2.4-27.0.1.el4 Red Hat Enterprise Linux WS version 2.1 bind 9.2.1-9.el2, bind-utils 9.2.1-9.el2 Red Hat Enterprise Linux WS version 3 bind 9.2.4-21.el3, bind-libs 9.2.4-21.el3, bind-utils 9.2.4-21.el3, bind-chroot 9.2.4-21.el3 Red Hat Enterprise Linux WS version 4 bind 9.2.4-27.0.1.el4, bind-libs 9.2.4-27.0.1.el4, bind-utils 9.2.4-27.0.1.el4, bind-chroot 9.2.4-27.0.1.el4 Red Hat Linux Advanced Workstation 2.1 bind 9.2.1-9.el2, bind-utils 9.2.1-9.el2
    fixed: vendor fix RHSA-2007:0740

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (EDB-4266)

Exploit prediction

13.09% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-4266 BIND 9 0.3beta - DNS Cache Poisoning remote, 2007-08-07

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.