CVE-2026-39919

CVE Enrichment

CVSS: 9.3 CRITICAL
EPSS: 0.78%
EPSS Percentile: 54.87%
CISA KEV: Not listed

Description

Ghostscript before 10.08.0 contains a heap-based buffer overflow vulnerability in the JPEG 2000 output adapter (base/sjpx_openjpeg.c) that allows attackers to cause memory corruption by supplying a crafted PDF containing a JPEG 2000 image with mismatched component subsampling factors. When image components declare different subsampling values, the non-samescale sub-byte-depth output path allocates a row buffer sized for packed output but writes a full byte per output column regardless of bit depth, overflowing the allocation and corrupting internal chunk-allocator metadata to achieve code execution.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: disclosure@vulncheck.com
Published: 15-Sep-2026 22:17
Last Modified: 25-Sep-2026 04:04
EPSS Date: 2026-10-13
CWE: CWE-122

CVSS Vector


            CVSS:4.0                            AV:N /
                            AC:L /
                            AT:N /
                            PR:N /
                            UI:N /
                            VC:H /
                            VI:H /
                            VA:H /
                            SC:N /
                            SI:N /
                            SA:N /
                            E:X /
                            CR:X /
                            IR:X /
                            AR:X /
                            MAV:X /
                            MAC:X /
                            MAT:X /
                            MPR:X /
                            MUI:X /
                            MVC:X /
                            MVI:X /
                            MVA:X /
                            MSC:X /
                            MSI:X /
                            MSA:X /
                            S:X /
                            AU:X /
                            R:X /
                            V:X /
                            RE:X /
                            U:X

References

Last enrichment sync: 14-Oct-2026 09:24
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

A critical heap buffer overflow vulnerability (CVE-2026-39919) in the Ghostscript interpreter and rendering engine could allow remote code execution through specially crafted PDF files. Ghostscript Flaw Enables Potential Remote Code Execution via Crafted PDFs

MITRE ATT&CK (1)

Vendors (2)

Products (5)

Tools (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.