Libxpm: libxpm: denial of service via out-of-bounds read in xpm file parsing
Published Jun 16, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.15%
Description
A flaw was found in libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the `xpmNextWord()` function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read beyond the file's end, leading to application crashes and Denial of Service conditions.
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | affected |
| |||
| Red Hat | Red Hat Enterprise Linux 6 | affected |
| |||
| Red Hat | Red Hat Enterprise Linux 7 | affected |
| |||
| Red Hat | Red Hat Enterprise Linux 8 | affected |
| |||
| Red Hat | Red Hat Enterprise Linux 9 | affected |
|
No data.
No data.
Red Hat Hardened Images
libxpm-main-3.5.17-7.2.hum1
Fixed · RHSA-2026:30354
Red Hat Hardened Images
libxpm-main-3.5.19-4.hum1
Fixed · RHSA-2026:47072
Red Hat Enterprise Linux 10
libXpm
Fix deferred
Red Hat Enterprise Linux 6
libXpm
Fix deferred
Red Hat Enterprise Linux 7
libXpm
Fix deferred
Red Hat Enterprise Linux 8
libXpm
Fix deferred
Red Hat Enterprise Linux 9
libXpm
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Hardened Images | libxpm-main-3.5.17-7.2.hum1 | Fixed | RHSA-2026:30354 |
| Red Hat Hardened Images | libxpm-main-3.5.19-4.hum1 | Fixed | RHSA-2026:47072 |
| Red Hat Enterprise Linux 10 | libXpm | Fix deferred | n/a |
| Red Hat Enterprise Linux 6 | libXpm | Fix deferred | n/a |
| Red Hat Enterprise Linux 7 | libXpm | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | libXpm | Fix deferred | n/a |
| Red Hat Enterprise Linux 9 | libXpm | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
Vendor solution
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Red Hat statement
The vulnerability is assessed as Medium severity due to its impact being limited to availability. While exploitation requires local access and low privileges, it does not require user interaction. Successful exploitation can cause applications processing XPM files to crash, which may affect batch processing systems or graphical applications. The absence of confidentiality and integrity impact reduces the overall severity, but the ease of triggering the issue still presents a reliability concern.
Red Hat mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jun 16, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
Jun-Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.15% (0.00154) | 3.94th | v5 (v2026.06.15) |
| Jun 17, 2026 | 0.14% (0.00138) | 3.55th | v5 (v2026.06.15) |
References (9)
- http://www.openwall.com/lists/oss-security/2026/04/21/3
- https://access.redhat.com/errata/RHSA-2026:30354 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:47072 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-4367 vdb-entryx_refsource_REDHATVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2448984 issue-trackingx_refsource_REDHATIssue Tracking
- https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bd
- https://nvd.nist.gov/vuln/detail/CVE-2026-4367
- https://seclists.org/oss-sec/2026/q2/192
- https://www.cve.org/CVERecord?id=CVE-2026-4367
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/04/21/3 | ||
| https://access.redhat.com/errata/RHSA-2026:30354 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2026:47072 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2026-4367 | vdb-entryx_refsource_REDHATVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2448984 | issue-trackingx_refsource_REDHATIssue Tracking | |
| https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bd | ||
| https://nvd.nist.gov/vuln/detail/CVE-2026-4367 | ||
| https://seclists.org/oss-sec/2026/q2/192 | ||
| https://www.cve.org/CVERecord?id=CVE-2026-4367 |
Change history (0)
No recorded changes yet.