CVE-2025-4444A security flaw has been discovered in Tor up to 0.4.7.16/0.4.8.17.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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.
- CVSS
- 3.7 LOW (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-400, CWE-404
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 19, 2026
Affected products
No affected products are listed yet.
References
- https://forum.torproject.org/t/alpha-and-stable-release-0-4-8-18-and-0-4-9-3-alpha/20578
- https://github.com/chunmianwang/Tordos
- https://gitlab.torproject.org/tpo/core/tor/-/raw/release-0.4.8/ReleaseNotes
- https://vuldb.com/?ctiid.324814
- https://vuldb.com/?id.324814
- https://vuldb.com/?submit.640605
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.