How severe is CVE-2015-1868?

CVE-2015-1868 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2015-1868 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 82% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1868?

CVE-2015-1868 primarily affects Powerdns Authoritative. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-1868?

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-2015-1868 published?

CVE-2015-1868 was published on 2015-05-18 and last updated on 2026-06-17.

CVE-2015-1868

CVE-2015-1868 is a high-severity vulnerability in Powerdns Authoritative with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 82% places it in the 100th 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: 82% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Powerdns Authoritative
Published: 2015-05-18
Last modified: 2026-06-17

Description

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 Authoritative (Auth) Server 3.2.x, 3.3.x before 3.3.2, and 3.4.x before 3.4.4 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a name that refers to itself.

Frequently asked questions

What is CVE-2015-1868?: 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 Authoritative (Auth) Server 3.2.x, 3.3.x before 3.3.2, and 3.4.x before 3.4.4 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a name that refers to itself.
How severe is CVE-2015-1868?: CVE-2015-1868 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2015-1868 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 82% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1868?: CVE-2015-1868 primarily affects Powerdns Authoritative. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-1868?: 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-2015-1868 published?: CVE-2015-1868 was published on 2015-05-18 and last updated on 2026-06-17.

References

Affected products (19)

cpe:2.3:a:powerdns:authoritative:3.2:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.3:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.3.1:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.3.2:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.0:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.1:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:authoritative:3.4.3:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.5:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.5.2:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.5.3:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.6.0:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.6.1:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.6.2:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.6.3:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:3.7.1:*:*:*:*:*:*:*

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-2015-5470 — High (CVSS 7.8): The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth)…
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 →