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CVE-2025-46807

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

8.7 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.44%Up 0.4 points since Jun 2, 2025
90%50%10%1%

What each source reports

CVE List Score used 8.7

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

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.

Record
CVE-2025-46807
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-770
Updated
2026-11-02
EUVDEUVD-2025-16631 8.7

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.

Record
EUVD-2025-16631
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-5pmj-5f4j-wp6g 8.7

A Allocation of Resources Without Limits or Throttling vulnerability in sslh allows attackers to...

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.

Record
GHSA-5pmj-5f4j-wp6g
CVSS 4.0
8.7 HighCVSS: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
Weakness
CWE-770
Updated
2026-11-02
NVD 8.7

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.

Record
CVE-2025-46807
CVSS 4.0
8.7 HighCVSS: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
Weakness
CWE-770
Updated
2026-11-02
OSV 8.7

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

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.

Record
CVE-2025-46807
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-770
Updated
2026-11-02
OSVDEBIAN-CVE-2025-46807 8.7

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.

Record
DEBIAN-CVE-2025-46807
CVSS 4.0
8.7 HighCVSS: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
Updated
2026-11-02
OSVUBUNTU-CVE-2025-46807 8.7

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.

Record
UBUNTU-CVE-2025-46807
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
OSVMGASA-2026-0227 No score

Updated sslh packages fix security vulnerabilities

CVE-2025-46806, A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures CVE-2025-46807, 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. CVE-2025-52936, Improper Link Resolution Before File Access ('Link Following') vulnerability in yrutschle sslh

Record
MGASA-2026-0227
Updated
2026-11-02
OSVopenSUSE-SU-2025:15194-1 No score

sslh-2.2.4-1.1 on GA media

These are all security issues fixed in the sslh-2.2.4-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15194-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
sslh
Debian:12
 All versions, plus listed versions
1.20-11.20-1+deb12u11.20-1.11.22c-12.1.1-12.1.1-22.1.4-12.3.1-1
 None known
sslh
Debian:13
 All versions, plus listed versions
2.1.4-12.3.1-1
 None known
sslh
Debian:14
 before 2.3.1-1, plus listed versions
2.1.4-1
2.3.1-1
sslh
Mageia:9
From an advisory covering 3 CVEs
 before 2.3.1-1.1.mga9
2.3.1-1.1.mga9
sslh
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
1.17-21.17-2ubuntu0.1~esm1
 None known
sslh
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
1.18-11.18-1ubuntu0.1~esm1
 None known
sslh
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
1.18-11.20-11.20-1+deb11u1build0.20.04.1
 None known
sslh
Ubuntu:22.04:LTS
 All versions, plus listed versions
1.20-11.20-1+deb11u1build0.22.04.1
 None known
sslh
Ubuntu:Pro:24.04:LTS
 All versions, plus listed versions
1.20-1.11.22c-11.22c-1ubuntu0.1~esm1
 None known
sslh
Ubuntu:25.10
 All versions, plus listed versions
2.1.4-1build12.1.4-1ubuntu0.25.10.1
 None known
sslh
Ubuntu:26.10
 All versions, plus listed versions
2.1.4-1build2
 None known
sslh
Ubuntu:26.04:LTS
 All versions, plus listed versions
2.1.4-1build12.1.4-1build22.1.4-1ubuntu0.26.04.1
 None known
sslh
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
 before 2.2.4-1.1
2.2.4-1.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-46807 is a high vulnerability (CVSS 8.7) in Https://github.com/yrutschle/sslh/releases/tag/v2.2.4 Sslh, published June 2, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.44%, the 38th percentile. Fixed in sslh 2.3.1-1.

References

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