How severe is CVE-2015-5470?

CVE-2015-5470 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2015-5470 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5470?

CVE-2015-5470 primarily affects Powerdns Authoritative. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-5470?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-5470 published?

CVE-2015-5470 was published on 2015-11-02 and last updated on 2026-06-17.

CVE-2015-5470

CVE-2015-5470 is a high-severity vulnerability in Powerdns Authoritative with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Powerdns Authoritative
Published: 2015-11-02
Last modified: 2026-06-17

Description

The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a long name that refers to itself. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1868.

Frequently asked questions

What is CVE-2015-5470?: The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a long name that refers to itself. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1868.
How severe is CVE-2015-5470?: CVE-2015-5470 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2015-5470 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-5470?: CVE-2015-5470 primarily affects Powerdns Authoritative. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-5470?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-5470 published?: CVE-2015-5470 was published on 2015-11-02 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.0:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.1:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.2:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.3:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.4:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.7.1:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.7.2:*:*:*:*:*:*:*

More vulnerabilities in Powerdns Authoritative

CVE-2020-24698 — Critical (CVSS 9.8): An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote,…
CVE-2020-24696 — High (CVSS 8.1): An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote,…
CVE-2015-1868 — High (CVSS 7.8): The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x before 3.6.3, and 3.7.x before 3.7.2 and…
CVE-2026-42001 — High (CVSS 7.5): Insufficient Validation of Autoprimary SOA Queries
CVE-2020-24697 — High (CVSS 7.5): An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote,…
CVE-2015-5230 — High (CVSS 7.5): The DNS packet parsing/generation code in PowerDNS (aka pdns) Authoritative Server 3.4.x before 3.4.6 allows remote…

All CVEs affecting Powerdns Authoritative →

Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →