Vulnerability DatabaseCVE-2026-44603
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CVE-2026-44603
Published:May 07, 2026
Updated:August 06, 2026
Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007.
Affected Packages
https://gitlab.torproject.org/tpo/core/tor.git (SCM_GIT):
Affected version(s) >=tor-0.0.2 <tor-0.4.9.7
Fix Suggestion:
Update to version tor-0.4.9.7
Related Resources (6)
https://gitlab.torproject.org/tpo/core/tor/-/commit/1703df3d439c83c2184e259fad1cfa19240f9c89
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44603.json
https://gitlab.torproject.org/tpo/core/tor/-/work_items/41245
https://nvd.nist.gov/vuln/detail/CVE-2026-44603
https://forum.torproject.org/c/news/tor-release-announcement/28
https://www.openwall.com/lists/oss-security/2026/05/06/8
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Off-by-one Error
CWE-193
EPSS
Base Score:
0.34