CVE-2025-4444CWE-400CWE-404denial-of-service

CVE-2025-4444

Low · published September 18, 2025

CVSS v3.1
3.7
EPSS
0%
Percentile
40.0
In the wild
Unconfirmed
What it is

A security flaw has been discovered in Tor up to 0.4.7.16/0.4.8.17. Impacted is an unknown function of the component Onion Service Descriptor Handler. Performing manipulation results in resource consumption. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is considered difficult. Upgrading to version 0.4.8.18 and 0.4.9.3-alpha is recommended to address this issue. It is recommended to upgrade the affected component.

The record
Technical detail
CVSS v3.1
3.7 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00475 · 40.0th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-404 · Improper Resource Shutdown or Release
Published
2025-09-18T18:15Z
References (6)
https://forum.torproject.org/t/alpha-and-stable-release-0-4-8-18-and-0-4-9-3-alpha/20578 · [email protected]https://github.com/chunmianwang/Tordos · [email protected]https://gitlab.torproject.org/tpo/core/tor/-/raw/release-0.4.8/ReleaseNotes · [email protected]https://vuldb.com/?ctiid.324814 · [email protected]https://vuldb.com/?id.324814 · [email protected]https://vuldb.com/?submit.640605 · [email protected]
EPSS history
Timeline
  • 18 SEP 13:58Z
    Tor Onion Service Descriptor resource consumption
    cvelistv5