High 8.8Published Jun 17, 2026

CVE-2026-55738Stack Buffer Overflow in rxi/microtar raw_to_header() via non-null-terminated TAR name field

Updated under an hour ago (Oct 27, 2026, 8:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for rxi microtar

Exploited in the last 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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-121, CWE-170
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: TuranSec
NVD analysis: Deferred
Record last updated: Aug 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

rxi microtar rxi:microtar (from the name)	0.1.0	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.