CVE-2025-71058

Dual DHCP DNS Server 8.01 improperly accepts and caches UDP DNS responses without validating that the response originates from a legitimate configured upstream DNS server. The implementation matches responses primarily by TXID and inserts results into the cache, enabling a remote attacker to inject forged responses and poison the DNS cache, potentially redirecting victims to attacker-controlled destinations.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FPokerFace/Security-Advisory/blob/main/CVE-2025-71058/poc.c
https://github.com/FPokerFace/Security-Advisory/tree/main/CVE-2025-71058
https://sourceforge.net/projects/dhcp-dns-server/

Configurations

No configuration.

History

No history.

Information

Published : 2026-04-07 19:16

Updated : 2026-07-24 22:10

NVD link : CVE-2025-71058

Mitre link : CVE-2025-71058

CVE.ORG link : CVE-2025-71058

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

{"id": "CVE-2025-71058", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-71058", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-09T14:08:11.699406Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}]}], "published": "2026-04-07T19:16:43.220", "references": [{"url": "https://github.com/FPokerFace/Security-Advisory/blob/main/CVE-2025-71058/poc.c", "source": "cve@mitre.org"}, {"url": "https://github.com/FPokerFace/Security-Advisory/tree/main/CVE-2025-71058", "source": "cve@mitre.org"}, {"url": "https://sourceforge.net/projects/dhcp-dns-server/", "source": "cve@mitre.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "Dual DHCP DNS Server 8.01 improperly accepts and caches UDP DNS responses without validating that the response originates from a legitimate configured upstream DNS server. The implementation matches responses primarily by TXID and inserts results into the cache, enabling a remote attacker to inject forged responses and poison the DNS cache, potentially redirecting victims to attacker-controlled destinations."}, {"lang": "es", "value": "Dual DHCP DNS Server 8.01 acepta y almacena en cach\u00e9 de forma indebida respuestas DNS UDP sin validar que la respuesta se origine de un servidor DNS ascendente leg\u00edtimo y configurado. La implementaci\u00f3n empareja las respuestas principalmente por TXID e inserta los resultados en la cach\u00e9, lo que permite a un atacante remoto inyectar respuestas falsificadas y envenenar la cach\u00e9 DNS, redirigiendo potencialmente a las v\u00edctimas a destinos controlados por el atacante."}], "lastModified": "2026-07-24T22:10:00.140", "sourceIdentifier": "cve@mitre.org"}