Out-of-bounds read in SetMacAddrAction

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-40210
StatePUBLISHED
AssignerOX
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 13:16:39 UTC
Updated2026-06-25 15:59:47 UTC
DescriptionAn out-of-bounds read might happen when SetMacAddrAction is used, potentially resulting in uninitialized memory being sent over the network or a crash.

Risk And Classification

Primary CVSS: v3.1 4.8 MEDIUM from [email protected]

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

EPSS: 0.003360000 probability, percentile 0.254320000 (date 2026-06-29)

Problem Types: CWE-126 | Buffer Over-read | CWE-126 CWE-126 Buffer Over-read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
3.1CNACVSS4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA PowerDNS DNSdist affected 1.9.0 1.9.15 semver Not specified
CNA PowerDNS DNSdist affected 2.0.0 2.0.7 semver Not specified

References

ReferenceSourceLinkTags
www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html [email protected] www.dnsdist.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Qifan Zhang (Palo Alto Networks) (en)

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