CVE-2026-40208 — LOW (3.7) — White Hats Nepal

Vulnerability Description

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

CVSS Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Related Weaknesses (CWE)

CWE-705

References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-0

FAQ

What is CVE-2026-40208?

CVE-2026-40208 is a vulnerability with a CVSS score of 3.7 (LOW). An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame.

How severe is CVE-2026-40208?

CVE-2026-40208 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40208?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.