CVE-2026-44597: Critical severity Tor Project Tor vulnerability
Published May 7, 2026
·Updated
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.
Affected Software
2 affected components
Tor Project Tor<0.4.9.7
torproject Tor<0.4.9.7
Remediation
Event History
May 7, 2026
CVE Published
via MITRE·12:56 AM
Data Sourced
via MITRE·12:56 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·01:16 AM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-44597?
CVE-2026-44597 is classified as a moderate severity vulnerability due to its potential for causing an out-of-bounds read.
2
How do I fix CVE-2026-44597?
To fix CVE-2026-44597, users should upgrade to Tor version 0.4.9.7 or later.
3
What causes CVE-2026-44597?
CVE-2026-44597 is caused by an out-of-bounds read when an END, TRUNCATE, or TRUNCATED cell does not contain a reason in its payload.
4
Which versions of Tor are affected by CVE-2026-44597?
CVE-2026-44597 affects Tor versions prior to 0.4.9.7.
5
Is CVE-2026-44597 present in earlier versions of Tor?
Yes, CVE-2026-44597 exists in versions of Tor before 0.4.9.7.