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Vulnerability record · CVE-2018-18398 · published 19 October 2018

CVE-2018-18398: Xfce thunar out-of-bounds read vulnerability

Xfce · Thunar

Xfce Thunar 1.6.15, when Xfce 4.12 is used, mishandles the IBus-Unikey input method for file searches within File Manager, leading to an out-of-bounds read and SEGV. This could potentially be exploited by an arbitrary local user who creates files in /tmp before the victim uses this input method.

4.7 CVSS 3.0 Medium EPSS 0.32% · top 76.8% CWE-125 · Out-of-bounds read
4.7CVSS 3.0 base score, v2 1.9
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Xfce Thunar 1.6.15, when Xfce 4.12 is used, mishandles the IBus-Unikey input method for file searches within File Manager, leading to an out-of-bounds read and SEGV. This could potentially be exploited by an arbitrary local user who creates files in /tmp before the victim uses this input method.

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://0xd0ff9.wordpress.com/2018/10/18/cve-2018-18398/ ExploitThird Party Advisory
https://0xd0ff9.wordpress.com/2018/10/18/cve-2018-18398/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-18398), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.