CVE-2026-54417

HighCVSS 7.5/10Last modified Aug 10, 2026

Description

An integer overflow in the mtar_next function in src/microtar.c in rxi microtar 0.1.0 allows a remote attacker to cause a denial of service (uncontrolled CPU consumption / infinite loop) via a crafted tar archive. mtar_next computes the offset to the next record as round_up(h.size, 512) + sizeof(mtar_raw_header_t) using 32-bit arithmetic.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-190 CWE-835

Affected software

No affected versions have been published.

Timeline

Published: Jun 17, 2026
Last modified: Aug 10, 2026
NVD status: Deferred

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