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Fencer Vulns
high 8.7

CVE-2025-46807 json

File Descriptor Exhaustion in sslh-select and sslh-ev triggers SEGFAULT

published 2025-06-02 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-16631

cvss
8.7
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

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.

Patch / fix

  • https://github.com/yrutschle/sslh/releases/tag/v2.2.4 sslh 2.2.4
  • sslh Debian 14 2.3.1-1

debian advisories DEBIAN-CVE-2025-46807

  • sslh openSUSE Tumbleweed 2.2.4-1.1

opensuse advisories openSUSE-SU-2025:15194-1

  • sslh Arch Linux 2.2.4-1

arch linux advisories AVG-2902

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-46807 updated cvss 5.3

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

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • https://github.com/yrutschle/sslh/releases/tag/v2.2.4 sslh

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.