CVE-2025-46807 File Descriptor Exhaustion in sslh-select and sslh-ev triggers SEGFAULT
Attackers can exhaust file descriptors in sslh, causing a segmentation fault and denying service to legitimate users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-46807?
CVE-2025-46807 is a high-severity denial of service vulnerability in https://github.com/yrutschle/sslh/releases/tag/v2.2.4 sslh, published on 2 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A Allocation of Resources Without Limits or Throttling vulnerability in sslh allows attackers to easily exhaust the file descriptors in sslh and deny legitimate users service.This issue affects sslh before 2.2.4.
Weakness: CWE-770
Which versions are affected by CVE-2025-46807?
How do I fix CVE-2025-46807?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-46807 being exploited?
There is no known exploitation of CVE-2025-46807 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-46807, GHSA-5pmj-5f4j-wp6g, UBUNTU-CVE-2025-46807.