CVE-2026-55738

HIGH 8.8

Stack Buffer Overflow in rxi/microtar raw_to_header() via non-null-terminated TAR name field

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-170
Vendor	rxi
Product	microtar
Published	Jun 17, 2026
Last Updated	Aug 10, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

rxi / microtar

0.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/rxi/microtar/blob/master/src/microtar.c#L111 github.com: https://github.com/rxi/microtar raw.githubusercontent.com: https://raw.githubusercontent.com/rxi/microtar/master/src/microtar.c

Credits

Saidakbarxon Maxsudxonov