CVE-2018-18398
Xfce Thunar 1.6.15, when Xfce 4.12 is used, mishandles the IBus-Unikey input method for file...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2018-18398- CVSS 3.0
- 4.7 Medium
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 1.9 Low
AV:L/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2018-18398- Updated
- 2026-11-02
EUVDEUVD-2018-10127 No score
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.
- Record
EUVD-2018-10127- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8953-rxhp-x9jm
Xfce Thunar 1.6.15, when Xfce 4.12 is used, mishandles the IBus-Unikey input method for file...
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.
- Record
GHSA-8953-rxhp-x9jm- CVSS 3.0
- 4.7 Medium
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2018-18398- CVSS 3.0
- 4.7 Medium
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-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.
- Record
DEBIAN-CVE-2018-18398- CVSS 3.0
- 4.7 Medium
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-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.
- Record
UBUNTU-CVE-2018-18398- CVSS 3.0
- 4.7 Medium
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
thunarDebian:12 |
All versions, plus listed versions 4.18.10-14.18.11-14.18.4-14.18.6-14.18.7-1 Show 12 moreShow less4.18.8-14.19.2-14.19.3-14.20.0-14.20.1-14.20.10-14.20.2-14.20.4-14.20.5-14.20.7-14.20.8-14.20.9-1 |
None known |
thunarDebian:13 |
All versions, plus listed versions 4.20.10-14.20.2-14.20.2-1+deb13u14.20.4-14.20.5-14.20.7-14.20.8-14.20.9-1 |
None known |
thunarDebian:14 |
All versions, plus listed versions 4.20.10-14.20.2-14.20.4-14.20.5-14.20.7-14.20.8-14.20.9-1 |
None known |
thunarUbuntu:16.04:LTS |
All versions, plus listed versions 1.6.10-11.6.10-21.6.10-2ubuntu11.6.11-0ubuntu0.16.04.11.6.11-0ubuntu0.16.04.2 |
None known |
thunarUbuntu:18.04:LTS |
All versions, plus listed versions 1.6.12-11.6.13-11.6.13-21.6.14-11.6.14-1ubuntu11.6.15-0ubuntu11.6.15-0ubuntu1.18.04.1 |
None known |
thunarUbuntu:20.04:LTS |
All versions, plus listed versions 1.8.9-11.8.11-11.8.12-11.8.14-0ubuntu1 |
None known |
thunarUbuntu:22.04:LTS |
All versions, plus listed versions 4.16.8-14.16.10-1 |
None known |
thunarUbuntu:24.04:LTS |
All versions, plus listed versions 4.18.7-14.18.8-14.18.8-1build24.18.8-1build3 |
None known |
thunarUbuntu:25.10 |
All versions, plus listed versions 4.20.2-14.20.4-1 |
None known |
thunarUbuntu:26.10 |
All versions, plus listed versions 4.20.7-14.20.8-14.20.9-1 |
None known |
thunarUbuntu:26.04:LTS |
All versions, plus listed versions 4.20.4-14.20.5-14.20.7-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-18398 is a medium vulnerability (CVSS 4.7) in Xfce Thunar, published October 19, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. No source names a fixed version.
