EUVD-2026-24943
Heap-based Buffer Overflow (CWE-122)
GHSA-3hg3-qp28-5p96
6.5
CVSS 3.1
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CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Lifecycle Timeline
2
Patch available
Apr 22, 2026 - 16:33 EUVD
Analysis Generated
Apr 22, 2026 - 15:02 vuln.today
DescriptionNVD
A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.
AnalysisAI
DNSdist is vulnerable to denial of service via out-of-bounds write when processing crafted UDP responses from a rogue backend server. An attacker controlling a backend DNS server can send a specially crafted UDP response with a query ID set off-by-one from the maximum configured value, triggering memory corruption that crashes the DNS forwarder. …
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External POC / Exploit Code
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