CVE WatchSep 23, 2026

CVE-2026-48977

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/opens

CVSS

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No CVSS

EPSS

0.5%

p41

KEV

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Exploit Today

0-100

Published: Sep 17, 2026 · Last modified: Sep 23, 2026 · CWE-123 · CWE-823 · CWE-1284

EPSS · 30d

0.5%EPSS · 30 days0.5%

2026-10-082026-11-05

Technical 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.

Official references

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