Torproject vulnerabilities1 known to be exploited.
Torproject has 40 published vulnerabilities across 2 products in our catalogue. 1 of them is on the list of flaws known to be exploited, so criminals are using them now. The most affected product is Tor, with 35. If you run Torproject software, patch the exploited flaws first.
The most recent Torproject flaw added to the known-exploited list is CVE-2016-9079, on 22 June 2023. We keep watching the known-exploited list.
Which Torproject products have the most vulnerabilities?
Tor leads with 35 published vulnerabilities. Open a product to see its versions and which of its flaws criminals are already using.
Which Torproject vulnerabilities are being exploited?
1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 7.5Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
Mozilla Firefox, Firefox ESR, and Thunderbird contain a use-after-free vulnerability in SVG Animation, targeting Firefox and Tor browser users on Windows.
Which Torproject flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 88%
A use-after-free vulnerability in SVG Animation has been discovered.
- 15%CVE-2018-0491High
A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10.
- 4.6%CVE-2019-8955High
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
- 3.7%CVE-2017-16541Medium
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://...
- 3.2%CVE-2020-10592High
Tor before 0.3.5.10, 0.4.x before 0.4.1.9, and 0.4.2.x before 0.4.2.7 allows remote attackers to cause a Denial of Service (CPU consumption), aka TROVE-2020-002.
- 3.1%CVE-2012-5573Medium
The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains circuits even if an unexpected SENDME cell arrives, which might allow remote attackers to cause a denial of service...
- 3.1%CVE-2018-16983Critical
NoScript Classic before 5.1.8.7, as used in Tor Browser 7.x and other products, allows attackers to bypass script blocking via the text/html;/json Content-Type value.
- 3.0%CVE-2016-1254High
Tor before 0.2.8.12 might allow remote attackers to cause a denial of service (client crash) via a crafted hidden service descriptor.
- 2.7%CVE-2021-34548High
An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003.
- 2.6%CVE-2018-0490High
An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10.
All Torproject products we track.
2 products, most vulnerabilities first. Find the ones you run, then open a product to see its versions and exploited flaws.
Running Torproject? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
Mozilla Firefox, Firefox ESR, and Thunderbird contain a use-after-free vulnerability in SVG Animation, targeting Firefox and Tor browser users on Windows.
- Matched to
- Tor on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
Our catalogue lists 40 published vulnerabilities across 2 products and 492 versions from Torproject. The most recent Torproject flaw added to the known-exploited list is CVE-2016-9079, on 22 June 2023.
1 Torproject vulnerability is on the list of flaws known to be exploited. The most recently added is CVE-2016-9079. The full list is on this page.
Tor, with 35 published vulnerabilities. Its own page lists the ones known to be exploited.
Create a Precursor Intelligence account and track the Torproject products you run. We match them against every published flaw, give each one a risk score from 0 to 100 and tell you as soon as we spot one that affects you, by email, in the app or by webhook.