Libxpm: libxpm: denial of service via out-of-bounds read in xpm file parsing
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.
- Published
- Jun 16, 2026
- Updated
- Jul 28, 2026
- EPSS
- 0.2% · 4th percentile
- CWE
- CWE-125
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · redhat
- 5.5
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
—
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
Red Hat Red Hat Enterprise Linux 10
- all versionsaffected
Red Hat Red Hat Enterprise Linux 6
- all versionsaffected
Red Hat Red Hat Enterprise Linux 7
- all versionsaffected
Red Hat Red Hat Enterprise Linux 8
- all versionsaffected
Red Hat Red Hat Enterprise Linux 9
- all versionsaffected
Red Hat Red Hat Hardened Images
- 3.5.17-7.2.hum1 and laternot affected · rpm
- 3.5.19-4.hum1 and laternot affected · rpm
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.20 | libxpm | before 3.5.19-r0 | 3.5.19-r0 |
| Debian:12 | libxpm | all versions | — |
| Debian:13 | libxpm | before 1:3.5.17-1+deb13u1 | 1:3.5.17-1+deb13u1 |
| Debian:14 | libxpm | before 1:3.5.19-1 | 1:3.5.19-1 |
| openSUSE:Leap 16.0 | libXpm | before 3.5.17-160000.3.1 | 3.5.17-160000.3.1 |
| openSUSE:Tumbleweed | libXpm | before 3.5.18-2.1 | 3.5.18-2.1 |
| Red Hat:hummingbird:1 | libXpm | before 0:3.5.19-4.hum1 | 0:3.5.19-4.hum1 |
| Red Hat:hummingbird:1 | libXpm | before 0:3.5.17-7.2.hum1 | 0:3.5.17-7.2.hum1 |
| Red Hat:hummingbird:1 | libXpm-devel | before 0:3.5.19-4.hum1 | 0:3.5.19-4.hum1 |
| SUSE:Linux Enterprise Server 16.0 | libXpm | before 3.5.17-160000.3.1 | 3.5.17-160000.3.1 |
Same product
red hat: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-96512Sudo: sudo: tz environment variable allows bypass of notbefore/notafter time-based authorization31Monitor
- CVE-2026-78410Util-linux: util-linux: restricted bind mounts do not pin the source, allowing x-mount.owner/group/mode redirection31Monitor
- CVE-2026-78408Util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority31Monitor
- CVE-2026-88830Busybox: busybox: tls montgomery reduction allocates bytes instead of digits, causing a pre-auth heap buffer overflow30Monitor
- CVE-2026-95619Gcc: libstdc++ integer overflow in `new` operator30Monitor
- CVE-2026-88832Busybox: busybox: romfs volume id parsing performs unbounded memcpy into fixed-size label buffer, causing heap overflow29Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:libxpm | 3.5.19-r0 · Alpine:v3.20 | Package registry (OSV) |
| debian:libxpm | 1:3.5.17-1+deb13u1 · Debian:13 | Package registry (OSV) |
| opensuse:libXpm | 3.5.18-2.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:libXpm | 0:3.5.17-7.2.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:libXpm-devel | 0:3.5.19-4.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| suse:libXpm | 3.5.17-160000.3.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-8883599 days apartBusybox: busybox: dpkg read_package_field() steps past nul terminator, causing out-of-bounds read on malformed .deb packages24Monitor
- CVE-2026-1500341 days apartBinutils: gnu binutils: heap-buffer-overflow in linker leads to information disclosure and denial of service22Monitor
- CVE-2026-8884099 days apartBusybox: busybox: tls ssl_server reads one byte out of bounds when parsing truncated clienthello21Monitor
- CVE-2026-8787585 days apartCups: openprinting cups: heap out-of-bounds read in cupsutf32toutf8() via missing source-length bound17Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- access.redhat.com/errata/RHSA-2026:30354
- access.redhat.com/errata/RHSA-2026:47072
- access.redhat.com/security/cve/CVE-2026-4367
- bugzilla.redhat.com/show_bug.cgi?id=2448984
- gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bd
- seclists.org/oss-sec/2026/q2/192
- www.openwall.com/lists/oss-security/2026/04/21/3
Vendor advisories and official records. Exploit/PoC links are deliberately left out.