CVE-2026-48977

HighCVSS 7.7/10Last modified Sep 23, 2026

Description

OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive row or column tile counts from a crafted Ventana BIF file. The invalid counts produce attacker-controlled relative memory offsets and allow arbitrary values to be written at those offsets, affecting all supported platforms and configurations and resulting in a crash or potential arbitrary code execution. This issue is fixed in version 4.0.1.

Metrics

CVSS 4.0 7.7/10

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/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

Weakness enumeration

CWE-123 CWE-823 CWE-1284

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
openslide	openslide	>= 3.4.1, < 4.0.1

References

Timeline

Published: Sep 17, 2026
Last modified: Sep 23, 2026
NVD status: Awaiting Analysis

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