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.
CVE-2012-5689
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.1 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:M/Au:N/C:N/I:N/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 12.0% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
Internet exposure
The internet-exposure footprint is temporarily unavailable — the KEV-Exposure radar's record for this CVE could not be loaded just now. That is not a finding of zero exposed services; please retry shortly.
- CVSS v2.0 (legacy)
- 7.1HIGHNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 7.1HIGHlow confidence
- EG Risk
- 52EG Risk 52/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation40% × 40%Automatability30% × 15%CISA SSVC: Track at low, Track or Track* at medium and Track* or Attend at high mission impact.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 12%
- EPSS %ILE
- 96th
- KEV
- Not listed
CISA SSVCTrack at low, Track or Track* at medium and Track* or Attend at high mission impact.
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
January 25, 2013
Last Modified
April 29, 2026
References (8)
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2013-0550.html
- cve@mitrehttp://www.isc.org/software/bind/advisories/cve-2012-5689
- cve@mitrehttp://www.ubuntu.com/usn/USN-2693-1
- cve@mitrehttps://kb.isc.org/article/AA-00855/
- af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2013-0550.html
- af854a3a-2127-422b-91ae-364da2661108http://www.isc.org/software/bind/advisories/cve-2012-5689
- af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2693-1
- af854a3a-2127-422b-91ae-364da2661108https://kb.isc.org/article/AA-00855/
Vendor Advisories for CVE-2012-5689
Vendor advisories for this CVE are temporarily unavailable — the list could not be loaded just now. That is not a sign that none exist; please retry shortly.
Patch Availability(2)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | bind9 (1:9.9.5.dfsg-9ubuntu0.2) @ vivid | 2026-05-29 | ubuntu |
| redhat | bind-32:9.8.2-0.17.rc1.el6.3 | 2013-02-21 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 0× in last 7d / 0× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-05 17:38 UTCEPSS rescore
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- 2026-09-29 08:33 UTCEG score recompute
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- 2026-07-26 13:46 UTCEG score recompute▲ 7.10
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- 2026-07-22 14:50 UTCOSV refresh
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Related CVEs(same product + same vendor + same CWE)
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- CVE-2023-50387NVD 7.5EG 9.0EPSS p100CRITICAL
- CVE-2020-8617NVD 7.5EG 9.0EPSS p100CRITICAL
- CVE-2016-2776NVD 7.5EG 9.0EPSS p100CRITICAL
- CVE-2008-1447NVD 6.8EG 9.0EPSS p100CRITICAL
- CVE-2016-1286NVD 8.6EG 8.8EPSS p99HIGH
- CVE-2023-50868NVD 7.5EG 8.7EPSS p99HIGH
- CVE-2020-8625NVD 8.1EG 8.7EPSS p99HIGH
- CVE-2026-13321EG 8.6HIGH
- CVE-2025-40780EG 8.6HIGH
Frequently asked(4)
What is CVE-2012-5689?
When was CVE-2012-5689 disclosed?
Is CVE-2012-5689 actively exploited?
How do I remediate CVE-2012-5689?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2012-5689
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