CVE-2025-46807: File Descriptor Exhaustion in sslh-select and sslh-ev triggers SEGFAULT

Severity: high (CVSS 8.7 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-02 · updated 2026-06-17
Weakness: CWE-770

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.

Affected products

https://github.com/yrutschle/sslh/releases/tag/v2.2.4 sslh: from ? before 2.2.4 — fixed in 2.2.4

How to fix

Upgrade to a fixed version: https://github.com/yrutschle/sslh/releases/tag/v2.2.4 sslh 2.2.4. Check the vendor advisory for mitigations.

References

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-46807
https://github.com/yrutschle/sslh/releases/tag/v2.2.4

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