CVE-2026-44602
Analyzed Analyzed - Analysis Complete

NULL Pointer Dereference in Tor Network CERT Cell Handling

Publication date: 2026-05-07

Last updated on: 2026-05-08

Assigner: MITRE

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

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Meta Information

Published
2026-05-07
Last Modified
2026-05-08
Generated
2026-07-06
AI Q&A
2026-05-07
EPSS Evaluated
2026-07-05
NVD
CVE-2026-44602
EUVD
EUVD-2026-28304

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
torproject tor to 0.4.9.7 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.

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Executive Summary

CVE-2026-44602 is a vulnerability in Tor versions before 0.4.9.7 where a NULL pointer dereference occurs when a CERT cell is received out of order. This means that the software attempts to access a memory location that is not properly initialized, which can cause the program to crash.

Impact Analysis

This vulnerability can lead to application crashes due to the NULL pointer dereference when processing CERT cells out of order. Such crashes may cause denial of service by interrupting the normal operation of the Tor client or relay.

Mitigation Strategies

The Tor Project strongly recommends upgrading to Tor version 0.4.9.7 immediately to fix this vulnerability.

Compliance Impact

There is no information provided in the available context or resources about how CVE-2026-44602 affects compliance with common standards and regulations such as GDPR or HIPAA.

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