CVE-2025-4444
Low
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.
SeverityLow
CVSS3.7
Exploit probability—
ProductTor
PublishedSep 18, 2025
First seenSep 18, 2025
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Tor | 0.4.7.0, 0.4.7.1, 0.4.7.2, 0.4.7.3, 0.4.7.4, 0.4.7.5, 0.4.7.6, 0.4.7.7, 0.4.7.8, 0.4.7.9, 0.4.7.10, 0.4.7.11, 0.4.7.12, 0.4.7.13, 0.4.7.14, 0.4.7.15, 0.4.7.16, 0.4.8.0, 0.4.8.1, 0.4.8.2, 0.4.8.3, 0.4.8.4, 0.4.8.5, 0.4.8.6, 0.4.8.7, 0.4.8.8, 0.4.8.9, 0.4.8.10, 0.4.8.11, 0.4.8.12, 0.4.8.13, 0.4.8.14, 0.4.8.15, 0.4.8.16, 0.4.8.17 | — |
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