CVE-2026-48977

high

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.

References

https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc

https://github.com/openslide/openslide/releases/tag/v4.0.1

https://github.com/openslide/openslide/pull/751

https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-82434

Details

Source: Mitre, NVD

Published: 2026-09-17

Updated: 2026-09-23

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.4

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 7.7

Vector: 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

Severity: High

EPSS

EPSS: 0.00476