CVE-2025-61430
MEDIUM EPSS 14.2%
Published Oct 24, 20258mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Published Oct 24, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago
Description
Improper handling of DNS over TCP in Simple DNS Plus v9 allows a remote attacker with querying access to the DNS server to cause the server to return request payloads from other clients. This happens when the TCP length prefix is malformed (len differs from actual packet len), and due to a concurrency/buffering issue, even when the lengths match. A length prefix that is smaller than the actual packet size increases information leakage. In summary, this vulnerability allows an attacker to see DNS queries of other clients.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
14.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-350
References 2
- ma-personal.notion.site https://ma-personal.notion.site/simpledns-vuln?source=copy_link
- incognitotgt.me https://www.incognitotgt.me/blog/simpledns-vuln
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.