cbcvebase.
CVE-2025-4444
published 2025-09-18

CVE-2025-4444: 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…

PriorityP415low3.7CVSS 3.1
AVNACHPRNUINSUCNINAL
EPSS
0.44%
35.4th percentile
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.

Affected

4 ranges
VendorProductVersion rangeFixed in
debiantor< tor 0.4.9.6-0+deb12u1 (bookworm)tor 0.4.9.6-0+deb12u1 (bookworm)
torprojecttor>= 0 < 0.4.9.6-0+deb12u10.4.9.6-0+deb12u1
torprojecttor>= 0 < 0.4.9.6-0+deb13u10.4.9.6-0+deb13u1
torprojecttor>= 0 < 0.4.8.21-10.4.8.21-1

CVSS provenance

nvdv3.13.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
nvdv4.06.3MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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
nvdv2.02.6LOWAV:N/AC:H/Au:N/C:N/I:N/A:P
ghsa7.5HIGH
osv6.3MEDIUM
vendor_redhat7.5HIGH
vendor_debian6.3MEDIUM
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