CVE-2026-40210 — MEDIUM (4.8)

Vulnerability Description

An out-of-bounds read might happen when SetMacAddrAction is used, potentially resulting in uninitialized memory being sent over the network or a crash.

CVSS Score

4.8

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

LOW

Related Weaknesses (CWE)

CWE-126

References

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

FAQ

What is CVE-2026-40210?

CVE-2026-40210 is a vulnerability with a CVSS score of 4.8 (MEDIUM). An out-of-bounds read might happen when SetMacAddrAction is used, potentially resulting in uninitialized memory being sent over the network or a crash.

How severe is CVE-2026-40210?

CVE-2026-40210 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40210?

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