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Description

An attacker might be able to trigger an out-of-bounds read by sending a crafted DNS response packet, when custom Lua code uses newDNSPacketOverlay to parse DNS packets. The out-of-bounds read might trigger a crash, leading to a denial of service, or access unrelated memory, leading to potential information disclosure.

PUBLISHED Reserved 2026-01-20 | Published 2026-03-31 | Updated 2026-03-31 | Assigner OX




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem types

Buffer Over-read

Product status

Default status
unaffected

1.9.0 (semver) before 1.9.12
affected

2.0.0 (semver) before 2.0.3
affected

Credits

Naoki Wakamatsu finder

References

www.dnsdist.org/...owerdns-advisory-for-dnsdist-2026-02.html

cve.org (CVE-2026-24028)

nvd.nist.gov (CVE-2026-24028)

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