How severe is CVE-2015-5311?

CVE-2015-5311 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-5311 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 67% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5311?

CVE-2015-5311 primarily affects Powerdns Authoritative. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-5311?

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

When was CVE-2015-5311 published?

CVE-2015-5311 was published on 2015-11-17 and last updated on 2026-06-17.

CVE-2015-5311

CVE-2015-5311 is a medium-severity vulnerability in Powerdns Authoritative with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 67% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 67% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Powerdns Authoritative
Published: 2015-11-17
Last modified: 2026-06-17

Description

PowerDNS (aka pdns) Authoritative Server 3.4.4 before 3.4.7 allows remote attackers to cause a denial of service (assertion failure and server crash) via crafted query packets.

Frequently asked questions

What is CVE-2015-5311?: PowerDNS (aka pdns) Authoritative Server 3.4.4 before 3.4.7 allows remote attackers to cause a denial of service (assertion failure and server crash) via crafted query packets.
How severe is CVE-2015-5311?: CVE-2015-5311 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-5311 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 67% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-5311?: CVE-2015-5311 primarily affects Powerdns Authoritative. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-5311?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-5311 published?: CVE-2015-5311 was published on 2015-11-17 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:powerdns:authoritative:3.4.4:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.5:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.6:*:*:*:*:*:*:*

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