n/a Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9

Name: n/a Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9
Brand: n/a

productEU

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

KEV-listed

public exploit

EPSS ≥ 10%

critical

by severity

0critical4high0medium1low

updated 2026-10-28

vulnerabilities (5)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2017-8821US	high7.5	1.96% (80th)	—	no fix	2017-12-03	≤ Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9
CVE-2017-8819US	high7.5	1.94% (80th)	—	no fix	2017-12-03	≤ Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9
CVE-2017-8820US	high7.5	1.70% (77th)	—	no fix	2017-12-03	≤ Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9
CVE-2017-8823US	high8.1	1.60% (76th)	—	no fix	2017-12-03	≤ Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9
CVE-2017-8822US	low3.7	0.90% (60th)	—	no fix	2017-12-03	≤ Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9

weaknesses (6)

The flaw types (CWEs) most of these CVEs share.

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer1 CVEs
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')1 CVEs
CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition1 CVEs
CWE-416Use After Free1 CVEs
CWE-417CWE-4171 CVEs
CWE-476NULL Pointer Dereference1 CVEs

sources (1)

Which sources assert this record, and when.

EUEU Vulnerability Database (ENISA)5 CVEs

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