Description
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.
References (6)
Scores
CVSS v3
3.7
EPSS
0.0006
EPSS Percentile
19.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-400
CWE-404
Status
published
Products (37)
n/a/Tor
0.4.7.0
n/a/Tor
0.4.7.1
n/a/Tor
0.4.7.10
n/a/Tor
0.4.7.11
n/a/Tor
0.4.7.12
n/a/Tor
0.4.7.13
n/a/Tor
0.4.7.14
n/a/Tor
0.4.7.15
n/a/Tor
0.4.7.16
n/a/Tor
0.4.7.2
... and 27 more
Published
Sep 18, 2025
Tracked Since
Feb 18, 2026