CVE-2012-5689

CVE-2012-5689 is a high-severity vulnerability in Isc Bind with a CVSS 2.0 base score of 7.1. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

• Severity: High (CVSS 2.0 base score 7.1)
• EPSS exploit prediction: 12% (96th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Isc Bind
• Published: 2013-01-25
• Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2012-5689?

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.

How severe is CVE-2012-5689?

CVE-2012-5689 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2012-5689 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5689?

CVE-2012-5689 primarily affects Isc Bind. In total, 43 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-5689?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2012-5689 published?

CVE-2012-5689 was published on 2013-01-25 and last updated on 2026-06-16.

References

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

Affected products (43)

• cpe:2.3:a:isc:bind:9.9.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:a1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:a2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:a3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:b1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:b2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:rc3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.0:rc4:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.1:p1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.1:p2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.9.2:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_hpc_node:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server_aus:6.4:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server_eus:6.4.z:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.0:a1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.0:b1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.0:p1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.0:p2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.0:p4:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.1:b1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.1:b2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.1:b3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.1:p1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.1:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.2:b1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.2:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.2:rc2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.3:p1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.3:p2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.8.4:*:*:*:*:*:*:*

More vulnerabilities in Isc Bind

• CVE-2008-0122 — Critical (CVSS 10.0): Off-by-one error in the inet_network function in libbind in ISC BIND 9.4.2 and earlier, as used in libc in FreeBSD 6.2…
• CVE-2001-0011 — Critical (CVSS 10.0): Buffer overflow in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.
• CVE-2001-0013 — Critical (CVSS 10.0): Format string vulnerability in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.
• CVE-2001-0010 — Critical (CVSS 10.0): Buffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.
• CVE-2000-1029 — Critical (CVSS 10.0): Buffer overflow in host command allows a remote attacker to execute arbitrary commands via a long response to an AXFR…
• CVE-1999-0837 — Critical (CVSS 10.0): Denial of service in BIND by improperly closing TCP sessions via so_linger.

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