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Vulnerability record · CVE-2012-5689 · published 25 January 2013

CVE-2012-5689: Isc bind improper input validation vulnerability

Isc · Bind

ISC BIND 9.8.x through 9.8.4-P1 and 9.9.x through 9.9.2-P1, in certain configurations involving DNS64 with a Response Policy Zone that lacks an AAAA rewrite rule, allows remote attackers to cause a denial of service (assertion failure and named daemon exit) via a query for an AAAA record.

7.1 CVSS 2.0 High EPSS 12% · top 4.0% CWE-20 · Improper input validation
7.1CVSS 2.0 base score
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

ISC BIND 9.8.x through 9.8.4-P1 and 9.9.x through 9.9.2-P1, in certain configurations involving DNS64 with a Response Policy Zone that lacks an AAAA rewrite rule, allows remote attackers to cause a denial of service (assertion failure and named daemon exit) via a query for an AAAA record.

AV:N/AC:M/Au:N/C:N/I:N/A:C

Affected products

8 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://rhn.redhat.com/errata/RHSA-2013-0550.html Third Party Advisory
http://www.isc.org/software/bind/advisories/cve-2012-5689 Vendor Advisory
http://www.ubuntu.com/usn/USN-2693-1 Third Party Advisory
https://kb.isc.org/article/AA-00855/ Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2013-0550.html Third Party Advisory
http://www.isc.org/software/bind/advisories/cve-2012-5689 Vendor Advisory
http://www.ubuntu.com/usn/USN-2693-1 Third Party Advisory
https://kb.isc.org/article/AA-00855/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2012-5689), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.