Out-of-Bounds Read Vulnerability in PowerDNS dnspod
CVE-2026-40210

4.8MEDIUM

Key Information:

Vendor

Powerdns

Status
Dnsdist
Vendor
CVE Published:
25 June 2026

What is CVE-2026-40210?

An issue has been identified in PowerDNS's dnsdist that may lead to an out-of-bounds read during the execution of the SetMacAddrAction function. This vulnerability could allow uninitialized memory to be leaked over the network, potentially exposing sensitive information or resulting in a service crash.

Affected Version(s)

DNSdist 1.9.0 < 1.9.15

DNSdist 2.0.0 < 2.0.7

References

https://www.dnsdist.org/security-advisories/powerdns-advi...

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Qifan Zhang (Palo Alto Networks)
.