CVE-2026-44603

Summary

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 Software

Weaknesses

• CWE-193: CWE-193 Off-by-one Error

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://forum.torproject.org/c/news/tor-release-announcement/28
• https://www.openwall.com/lists/oss-security/2026/05/06/8
• https://gitlab.torproject.org/tpo/core/tor/-/work_items/41245
• https://gitlab.torproject.org/tpo/core/tor/-/commit/1703df3d439c83c2184e259fad1cfa19240f9c89

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