CVE-2026-55738: Rxi Microtar

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A stack-based buffer overflow exists in the raw_to_header function in src/microtar.c in rxi microtar 0.1.0. The function copies the 100-byte name and linkname fields of a TAR header with strcpy without guaranteeing null termination of the source.

Affected products

• Rxi Microtar: version 0.1.0 only

Published 2026-06-17. Last modified 2026-08-10.