torproject Vulnerabilities and Affected Products

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Vulnerabilities associated with Tor.

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  • Tor6 vulnerabilities

Showing 6 vulnerabilities on this page for Tor

Signals CISA KEV Ransomware Nuclei
VulnerabilityTitle and contextCVSSEPSSPoCsSignals

Tor Off-by-One Out-of-Bounds Read via Malformed BEGIN Cell

Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007.

CWE-193May 7, 2026
CVSS3.7v3.1EPSS0.342%PoCs0SignalsSTIX

Tor NULL Pointer Dereference via Out-of-Order CERT Cell

Tor before 0.4.9.7 has a NULL pointer dereference when a CERT cell is received out of order, aka TROVE-2026-006.

CWE-476May 7, 2026
CVSS3.7v3.1EPSS0.33%PoCs0SignalsSTIX

Tor Client Double-Close of Circuit Denial of Service

Tor before 0.4.9.7, when circuit queue memory pressure exists, can experience a client crash because of a double close of a circuit, aka TROVE-2026-009.

CWE-837May 7, 2026
CVSS3.7v3.1EPSS0.337%PoCs0SignalsSTIX

Tor Conflux Out-of-Order Queue Clearing Incorrect Behavior Order

Tor before 0.4.9.7 mishandles accounting of the conflux out-of-order queue during the clearing of a queue, aka TROVE-2026-010.

CWE-696May 7, 2026
CVSS3.7v3.1EPSS0.378%PoCs0SignalsSTIX

Tor Incorrect Resource Transfer Between Spheres in BEGIN_DIR via Conflux Legs

Tor before 0.4.9.7 can attempt or accept BEGIN_DIR via conflux legs, aka TROVE-2026-008.

CWE-669May 7, 2026
CVSS3.7v3.1EPSS0.287%PoCs0SignalsSTIX

Tor Out-of-Bounds Read in END/TRUNCATE/TRUNCATED Cell Processing

Tor before 0.4.9.7 has an out-of-bounds read when an END, a TRUNCATE, or a TRUNCATED cell lacks a reason in its payload, aka TROVE-2026-011.

CWE-684May 7, 2026
CVSS3.7v3.1EPSS0.45%PoCs0SignalsSTIX