How severe is CVE-2026-24030?

CVE-2026-24030 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-24030 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24030?

CVE-2026-24030 affects Powerdns Dnsdist. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24030?

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

Does CVE-2026-24030 have an EU (EUVD) identifier?

Yes. CVE-2026-24030 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17405.

When was CVE-2026-24030 published?

CVE-2026-24030 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-24030

CVE-2026-24030 is a medium-severity vulnerability in Powerdns Dnsdist with a CVSS 3.x base score of 5.3. 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-789.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17405
Weakness: CWE-789
Affected product: Powerdns Dnsdist
Published: 2026-03-31
Last modified: 2026-06-17

Description

An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.

Frequently asked questions

What is CVE-2026-24030?: An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.
How severe is CVE-2026-24030?: CVE-2026-24030 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-24030 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24030?: CVE-2026-24030 affects Powerdns Dnsdist. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24030?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-24030 have an EU (EUVD) identifier?: Yes. CVE-2026-24030 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17405.
When was CVE-2026-24030 published?: CVE-2026-24030 was published on 2026-03-31 and last updated on 2026-06-17.

References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html

Affected products (1)

cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*

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