Buffer overflow in Rxi Microtar
CVE-2026-71267
microtar's mtar_write_file_header() and mtar_write_dir_header() functions (src/microtar.c) copy a caller-supplied entry name into the 100-byte `name` field of a stack-allocated mtar_header_t via strcpy(h.name, name), with no check that str…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Rxi Microtar — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-71267?
- CVE-2026-71267 is a critical-severity vulnerability in Rxi Microtar, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-08-05.
- How severe is CVE-2026-71267?
- Critical severity. CVSS v3 base score is 9.8 out of 10.