CVE-2012-1192

CVE-2012-1192 is a medium-severity vulnerability in Unbound with a CVSS 2.0 base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2012-1192?
CVE-2012-1192 has a CVSS 2.0 base score of 6.4, rated medium severity.
Is CVE-2012-1192 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-1192?
CVE-2012-1192 primarily affects Unbound. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-1192?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-1192 published?
CVE-2012-1192 was published on 2012-02-17 and last updated on 2026-06-16.

References

Affected products (37)

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