How severe is CVE-2019-10203?

CVE-2019-10203 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2019-10203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-10203?

CVE-2019-10203 affects Powerdns Authoritative Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-10203?

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

When was CVE-2019-10203 published?

CVE-2019-10203 was published on 2019-11-22 and last updated on 2026-06-17.

CVE-2019-10203

CVE-2019-10203 is a medium-severity vulnerability in Powerdns Authoritative Server with a CVSS 3.x base score of 4.3. 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-681.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-681
Affected product: Powerdns Authoritative Server
Published: 2019-11-22
Last modified: 2026-06-17

Description

PowerDNS Authoritative daemon , pdns versions 4.0.x before 4.0.9, 4.1.x before 4.1.11, exiting when encountering a serial between 2^31 and 2^32-1 while trying to notify a slave leads to DoS.

Frequently asked questions

What is CVE-2019-10203?: PowerDNS Authoritative daemon , pdns versions 4.0.x before 4.0.9, 4.1.x before 4.1.11, exiting when encountering a serial between 2^31 and 2^32-1 while trying to notify a slave leads to DoS.
How severe is CVE-2019-10203?: CVE-2019-10203 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2019-10203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-10203?: CVE-2019-10203 affects Powerdns Authoritative Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-10203?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-10203 published?: CVE-2019-10203 was published on 2019-11-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*

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