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CVE-2026-6770

Firefox Vulnerability Allows Tor User Fingerprinting

The vulnerability is tracked as CVE-2026-6770 and it has been patched with the release of Firefox 150 and Tor 15.0.10. The post Firefox Vulnerability Allows Tor User Fingerprinting appeared first on SecurityWeek. ]]>

Monday, April 27, 2026FirefoxVulnios Threat Intelligence
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Vulnerability Snapshot

CVE-2026-6770 is rated HIGH โ€” exploitation is straightforward for a motivated attacker and impact is significant. Apply the vendor patch within your standard high-severity SLA.

Affected technology: Firefox, Firefox 150.

Executive Summary

The vulnerability is tracked as CVE-2026-6770 and it has been patched with the release of Firefox 150 and Tor 15.0.10. The post Firefox Vulnerability Allows Tor User Fingerprinting appeared first on SecurityWeek. ]]>

Source

How Vulnios Detects This

Vulnios scans for this vulnerability using Trivy and Grype for SBOM-based CVE matching and Vulnios CVE feed continuous monitoring against your asset inventory. Run a scan against your environment to see whether you are exposed; findings are linked back to the original CVE record so triage starts with the patch path already known.

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Affected Products

FirefoxFirefox 150

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Frequently Asked Questions

What is CVE-2026-6770?

CVE-2026-6770 is a high-severity vulnerability tracked under the Common Vulnerabilities and Exposures program. The vulnerability is tracked as CVE-2026-6770 and it has been patched with the release of Firefox 150 and Tor 15.0.10. The post Firefox Vulnerability Allows Tor User Fingerprinting appeared first on S

Am I affected?

Check whether your environment runs Firefox, Firefox 150. If you operate any of those, treat yourself as in scope until you have evidence otherwise. A Vulnios scan will identify the exact assets carrying the affected version.

How urgent is the response?

High: address inside your standard high-severity SLA (typically 7 days for internet-exposed assets, 30 days for internal). Skip ahead in the queue if the host is internet-facing.

How do I remediate?

Apply the vendor patch listed in the upstream advisory linked under Sources. If the patch is not yet available, follow the vendor-supplied workaround (often a config flag or feature disable) and add detections for the published exploit pattern in your SIEM. Re-scan after the patch lands to confirm the finding clears.

Where can I track exploitation activity?

Watch CISA's Known Exploited Vulnerabilities catalog for CVE-2026-6770. Cross-reference with public exploit databases and your own SIEM/IDS for indicator-of-compromise patterns. Vulnios tracks KEV status automatically and surfaces it on the asset findings view.

How does Vulnios help with this?

Vulnios continuously cross-references your asset inventory against the live CVE feed (NVD, vendor advisories, CISA KEV, and curated OSINT). When a new CVE matches your environment, you get a prioritized finding with the severity, KEV status, exploit-prediction (EPSS), and a direct path to the vendor patch. You can start a free scan from the homepage.

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