CVE-2026-402083.7LowCWE-705

CVE-2026-40208: Denial of service via DoH3 queries

PowerDNS · DNSdist

Vendor fix available · Affected: PowerDNS DNSdist · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.4%probability of exploitation in the next 30 days

34th percentile

050100

Higher than 34% of scored CVEs

3.7LowCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

PowerDNS · DNSdistfrom 1.9.0 before 1.9.15; from 2.0.0 before 2.0.7

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Incorrect Control Flow Scoping · Input Validation and Logic
Vendor: PowerDNS
Published: June 2026
Band: Unlikely (under 1%), June 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-40208 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.