How severe is CVE-2026-35406?

CVE-2026-35406 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-35406 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35406?

CVE-2026-35406 affects Containers Aardvark-dns. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35406?

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

Does CVE-2026-35406 have an EU (EUVD) identifier?

Yes. CVE-2026-35406 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19972.

When was CVE-2026-35406 published?

CVE-2026-35406 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-35406

CVE-2026-35406 is a medium-severity vulnerability in Containers Aardvark-dns with a CVSS 3.x base score of 6.2. 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-835.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19972
Weakness: CWE-835
Affected product: Containers Aardvark-dns
Published: 2026-04-07
Last modified: 2026-06-17

Description

Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1.

Frequently asked questions

What is CVE-2026-35406?: Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1.
How severe is CVE-2026-35406?: CVE-2026-35406 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-35406 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35406?: CVE-2026-35406 affects Containers Aardvark-dns. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35406?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-35406 have an EU (EUVD) identifier?: Yes. CVE-2026-35406 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19972.
When was CVE-2026-35406 published?: CVE-2026-35406 was published on 2026-04-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:containers:aardvark-dns:*:*:*:*:*:*:*:*

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