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Case File

CVE-2021-39246

MEDIUM · CVSS 6.1 EPSS 0.47% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-24 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.1. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-39246
Severity
MEDIUM
CVSS
6.1
EPSS
0.47%

Original NVD Description

Tor Browser through 10.5.6 and 11.x through 11.0a4 allows a correlation attack that can compromise the privacy of visits to v2 onion addresses. Exact timestamps of these onion-service visits are logged locally, and an attacker might be able to compare them to timestamp data collected by the destination server (or collected by a rogue site within the Tor network).

Related CVEs

Other vulnerabilities affecting the same vendor(s)