CVE-2025-61430 Information disclosure in n/a
A remote attacker can view other clients' DNS queries due to improper TCP length handling in Simple DNS Plus.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-61430?
CVE-2025-61430 is a medium-severity vulnerability in n/a, published on 24 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-350
Which versions are affected by CVE-2025-61430?
How do I fix CVE-2025-61430?
No fix has been published for CVE-2025-61430 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-61430 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-61430 exists.
Sources
Also known as GHSA-9qfx-2rgm-h5rf.