by Kastro
Paper/Archive/CVE-2026-44597

CVE-2026-44597

torproject Tor — 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.

EPSS 0.4%CVSS 9.1
critical.is priorityof 100
35
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 39.1.391 × 207.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Tor< 0.4.9.70.4.9.7CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
mitre (CNA)3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refforum.torproject.org/c/news/tor-release-announcement/28refopenwall.com/lists/oss-security/2026/05/06/8refgitlab.torproject.org/tpo/core/tor/-/work_items/41254refgitlab.torproject.org/tpo/core/tor/-/commit/8f98054b1982d00a14639864d03e9afd90b87481