CVE-2012-1192

The resolver in Unbound before 1.4.11 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.

Published: 2012-02-17 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-1192 is rated Moderate Risk (50.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.45%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2012-1192

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.62% 1.45% +0.82%
2 2025-03-30 0.66% 0.62% -0.04%
3 2025-03-29 — 0.66% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-1192

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2012-1192

OS Trackers for CVE-2012-1192

vendor priority summary link
ubuntu medium CVE-2012-1192 medium priority: Ubuntu including 1 source packages (unbound), 10 status rows across 10 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): ignored 4, not-affected 4, DNE 1, released 1. https://ubuntu.com/security/CVE-2012-1192

Affected software / configurations for CVE-2012-1192

Vendor Product Version Raw CPE
unbound unbound <= 1.4.10 cpe:2.3:a:unbound:unbound:*:*:*:*:*:*:*:*
unbound unbound 0.0 cpe:2.3:a:unbound:unbound:0.0:*:*:*:*:*:*:*
unbound unbound 0.1 cpe:2.3:a:unbound:unbound:0.1:*:*:*:*:*:*:*
unbound unbound 0.2 cpe:2.3:a:unbound:unbound:0.2:*:*:*:*:*:*:*
unbound unbound 0.3 cpe:2.3:a:unbound:unbound:0.3:*:*:*:*:*:*:*
unbound unbound 0.4 cpe:2.3:a:unbound:unbound:0.4:*:*:*:*:*:*:*
unbound unbound 0.5 cpe:2.3:a:unbound:unbound:0.5:*:*:*:*:*:*:*
unbound unbound 0.6 cpe:2.3:a:unbound:unbound:0.6:*:*:*:*:*:*:*
unbound unbound 0.7 cpe:2.3:a:unbound:unbound:0.7:*:*:*:*:*:*:*
unbound unbound 0.7.1 cpe:2.3:a:unbound:unbound:0.7.1:*:*:*:*:*:*:*
unbound unbound 0.7.2 cpe:2.3:a:unbound:unbound:0.7.2:*:*:*:*:*:*:*
unbound unbound 0.8 cpe:2.3:a:unbound:unbound:0.8:*:*:*:*:*:*:*
unbound unbound 0.9 cpe:2.3:a:unbound:unbound:0.9:*:*:*:*:*:*:*
unbound unbound 0.10 cpe:2.3:a:unbound:unbound:0.10:*:*:*:*:*:*:*
unbound unbound 0.11 cpe:2.3:a:unbound:unbound:0.11:*:*:*:*:*:*:*
unbound unbound 1.0.0 cpe:2.3:a:unbound:unbound:1.0.0:*:*:*:*:*:*:*
unbound unbound 1.0.1 cpe:2.3:a:unbound:unbound:1.0.1:*:*:*:*:*:*:*
unbound unbound 1.0.2 cpe:2.3:a:unbound:unbound:1.0.2:*:*:*:*:*:*:*
unbound unbound 1.1.0 cpe:2.3:a:unbound:unbound:1.1.0:*:*:*:*:*:*:*
unbound unbound 1.1.1 cpe:2.3:a:unbound:unbound:1.1.1:*:*:*:*:*:*:*
unbound unbound 1.2.0 cpe:2.3:a:unbound:unbound:1.2.0:*:*:*:*:*:*:*
unbound unbound 1.2.1 cpe:2.3:a:unbound:unbound:1.2.1:*:*:*:*:*:*:*
unbound unbound 1.3.0 cpe:2.3:a:unbound:unbound:1.3.0:*:*:*:*:*:*:*
unbound unbound 1.3.1 cpe:2.3:a:unbound:unbound:1.3.1:*:*:*:*:*:*:*
unbound unbound 1.3.2 cpe:2.3:a:unbound:unbound:1.3.2:*:*:*:*:*:*:*
unbound unbound 1.3.3 cpe:2.3:a:unbound:unbound:1.3.3:*:*:*:*:*:*:*
unbound unbound 1.3.4 cpe:2.3:a:unbound:unbound:1.3.4:*:*:*:*:*:*:*
unbound unbound 1.4.0 cpe:2.3:a:unbound:unbound:1.4.0:*:*:*:*:*:*:*
unbound unbound 1.4.1 cpe:2.3:a:unbound:unbound:1.4.1:*:*:*:*:*:*:*
unbound unbound 1.4.2 cpe:2.3:a:unbound:unbound:1.4.2:*:*:*:*:*:*:*
unbound unbound 1.4.3 cpe:2.3:a:unbound:unbound:1.4.3:*:*:*:*:*:*:*
unbound unbound 1.4.4 cpe:2.3:a:unbound:unbound:1.4.4:*:*:*:*:*:*:*
unbound unbound 1.4.5 cpe:2.3:a:unbound:unbound:1.4.5:*:*:*:*:*:*:*
unbound unbound 1.4.6 cpe:2.3:a:unbound:unbound:1.4.6:*:*:*:*:*:*:*
unbound unbound 1.4.7 cpe:2.3:a:unbound:unbound:1.4.7:*:*:*:*:*:*:*
unbound unbound 1.4.8 cpe:2.3:a:unbound:unbound:1.4.8:*:*:*:*:*:*:*
unbound unbound 1.4.9 cpe:2.3:a:unbound:unbound:1.4.9:*:*:*:*:*:*:*

References for CVE-2012-1192

cvelogic Threat Intelligence