Cyber Resilience

CVE-2026-44603

LowUpdated

Published: 07 May 2026

Published
07 May 2026
Modified
17 June 2026
KEV Added
—
Patch
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CVSS Score v3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0034 26.2th percentile
Risk Priority 15 floored blend · peak EPSS

Summary

CVE-2026-44603 is a low-severity Off-by-one Error (CWE-193) vulnerability in Torproject Tor. Its CVSS base score is 3.7 (Low).

Operationally, ranked at the 26.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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(s)
CWE-193

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

Insufficient information to map techniques.
Confidence: LOW · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2021-34550Same product: Torproject Tor
CVE-2026-44597Same product: Torproject Tor
CVE-2026-44602Same product: Torproject Tor
CVE-2022-33903Same product: Torproject Tor
CVE-2021-34548Same product: Torproject Tor
CVE-2021-34549Same product: Torproject Tor
CVE-2026-44601Same product: Torproject Tor
CVE-2021-38385Same product: Torproject Tor
CVE-2026-44599Same product: Torproject Tor
CVE-2026-44600Same product: Torproject Tor

Affected Assets

torproject
tor
≤ 0.4.9.7

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References