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Vulnerability record · CVE-2025-71058 · published 7 April 2026

CVE-2025-71058: Code injection vulnerability

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.

9.1 CVSS 3.1 Critical EPSS 0.45% · top 63.3% CWE-94 · Code injection Awaiting Analysis
9.1CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
24 Jul 2026Last modified by NVD

Description

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

References

LinkTags
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/

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Source: NIST National Vulnerability Database (record CVE-2025-71058), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.