CVE-2025-61430
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-24

Last updated on: 2025-10-27

Assigner: MITRE

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.
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Meta Information
Published
2025-10-24
Last Modified
2025-10-27
Generated
2026-06-16
AI Q&A
2025-10-24
EPSS Evaluated
2026-06-15
NVD
CVE-2025-61430
EUVD
EUVD-2025-35849
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
simple_dns_plus simple_dns_plus 9.1.116
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-350 The product performs reverse DNS resolution on an IP address to obtain the hostname and make a security decision, but it does not properly ensure that the IP address is truly associated with the hostname.
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Executive Summary

This vulnerability in Simple DNS Plus v9 involves improper handling of DNS over TCP. A remote attacker with access to query the DNS server can exploit malformed TCP length prefixes or concurrency/buffering issues to cause the server to return DNS request payloads from other clients. Essentially, the attacker can see DNS queries made by other clients due to information leakage caused by these issues.

Impact Analysis

The vulnerability can lead to information leakage where an attacker can view DNS queries from other clients. This compromises the privacy of users by exposing their DNS requests, potentially revealing sensitive information about their internet activity or network usage.

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