CVE-2017-16541
Tor Browser before 7.0.9 on macOS and Linux allows remote attackers to bypass the intended anonymity feature and discover a client IP address via vectors involving a crafted web site that leverages file:// mishandling in Firefox, aka TorMoil.
Does this matter?
Lower severity and a low EPSS score (3.66%). Track it; it rarely justifies an emergency change on its own.
Description
Tor Browser before 7.0.9 on macOS and Linux allows remote attackers to bypass the intended anonymity feature and discover a client IP address via vectors involving a crafted web site that leverages file:// mishandling in Firefox, aka TorMoil. NOTE: Tails is unaffected.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- EPSS
- 3.66% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- torproject/tor · redhat/enterprise linux desktop · redhat/enterprise linux eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server tus · redhat/enterprise linux workstation · debian/debian linux
- Source
- cve@mitre.org
EPSS 3.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/101665Broken Link
- http://www.securitytracker.com/id/1041610Broken Link
- https://access.redhat.com/errata/RHSA-2018:2692Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2693Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3403Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3458Third Party Advisory
- https://blog.torproject.org/tor-browser-709-releasedIssue Tracking, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1412081Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00011.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201810-01Third Party Advisory
- https://security.gentoo.org/glsa/201811-13Third Party Advisory
- https://trac.torproject.org/projects/tor/ticket/24052Issue Tracking, Vendor Advisory
- https://www.bleepingcomputer.com/news/security/tormoil-vulnerability-leaks-real-ip-address-from-tor-browser-users/Issue Tracking, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4327Third Party Advisory
- https://www.wearesegment.com/research/tormoil-torbrowser-unspecified-critical-security-vulnerability/Issue Tracking, Third Party Advisory
- http://www.securityfocus.com/bid/101665Broken Link
- http://www.securitytracker.com/id/1041610Broken Link
- https://access.redhat.com/errata/RHSA-2018:2692Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2693Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3403Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3458Third Party Advisory
- https://blog.torproject.org/tor-browser-709-releasedIssue Tracking, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1412081Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00011.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201810-01Third Party Advisory
- https://security.gentoo.org/glsa/201811-13Third Party Advisory
- https://trac.torproject.org/projects/tor/ticket/24052Issue Tracking, Vendor Advisory
- https://www.bleepingcomputer.com/news/security/tormoil-vulnerability-leaks-real-ip-address-from-tor-browser-users/Issue Tracking, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4327Third Party Advisory
- https://www.wearesegment.com/research/tormoil-torbrowser-unspecified-critical-security-vulnerability/Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.