CVE-2018-18398
CVE-2018-18398 is a medium-severity vulnerability in Xfce Thunar with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Medium (CVSS 3.x base score 4.7)
- CVSS v2: 1.9
- EPSS exploit prediction: 0% (24th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Xfce Thunar
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2018-18398?
- 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.
- How severe is CVE-2018-18398?
- CVE-2018-18398 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2018-18398 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-18398?
- CVE-2018-18398 primarily affects Xfce Thunar. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-18398?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-18398 published?
- CVE-2018-18398 was published on 2018-10-19 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:xfce:thunar:*:*:*:*:*:*:*:*
- cpe:2.3:a:xfce:xfce:*:*:*:*:*:*:*:*
More vulnerabilities in Xfce Thunar
- CVE-2021-32563 — Critical (CVSS 9.8): An issue was discovered in Thunar before 4.16.7 and 4.17.x before 4.17.2. When called with a regular file as a…
- CVE-2011-1588 — High (CVSS 7.8): Thunar before 1.3.1 could crash when copy and pasting a file name with % format characters due to a format string error.
All CVEs affecting Xfce Thunar →
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