CVE-2025-71058
CVE-2025-71058 is a critical-severity vulnerability with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- EPSS exploit prediction: 0% (36th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-209280
- Weakness: CWE-94
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2025-71058?
- CVE-2025-71058 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
- Is CVE-2025-71058 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-71058?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-71058 have an EU (EUVD) identifier?
- Yes. CVE-2025-71058 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209280.
- When was CVE-2025-71058 published?
- CVE-2025-71058 was published on 2026-04-07 and last updated on 2026-06-17.
References
- 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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