How severe is CVE-2012-2978?

CVE-2012-2978 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-2978 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-2978?

CVE-2012-2978 primarily affects Nlnetlabs Nsd. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-2978?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-2978 published?

CVE-2012-2978 was published on 2012-07-27 and last updated on 2026-06-16.

CVE-2012-2978

CVE-2012-2978 is a medium-severity vulnerability in Nlnetlabs Nsd with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Nlnetlabs Nsd
Published: 2012-07-27
Last modified: 2026-06-16

Description

query.c in NSD 3.0.x through 3.0.8, 3.1.x through 3.1.1, and 3.2.x before 3.2.12 allows remote attackers to cause a denial of service (NULL pointer dereference and child process crash) via a crafted DNS packet.

Frequently asked questions

What is CVE-2012-2978?: query.c in NSD 3.0.x through 3.0.8, 3.1.x through 3.1.1, and 3.2.x before 3.2.12 allows remote attackers to cause a denial of service (NULL pointer dereference and child process crash) via a crafted DNS packet.
How severe is CVE-2012-2978?: CVE-2012-2978 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-2978 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-2978?: CVE-2012-2978 primarily affects Nlnetlabs Nsd. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-2978?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-2978 published?: CVE-2012-2978 was published on 2012-07-27 and last updated on 2026-06-16.

References

Affected products (21)

cpe:2.3:a:nlnetlabs:nsd:3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.0.7:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.0.8:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.1.0:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.5:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.6:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.7:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.8:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.9:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:nsd:3.2.10:*:*:*:*:*:*:*

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