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.
Published: 2026-09-17
Score: 7.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Thu, 17 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
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.
Title OpenSlide: Arbitrary memory write with crafted Ventana BIF file
Weaknesses CWE-123
CWE-1284
CWE-823
References
Metrics cvssV4_0

{'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'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-17T20:26:21.921Z

Reserved: 2026-05-26T23:26:07.974Z

Link: CVE-2026-48977

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-17T21:17:13.323

Modified: 2026-09-17T21:17:13.323

Link: CVE-2026-48977

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-123

    Write-what-where Condition

  • CWE-1284

    Improper Validation of Specified Quantity in Input

  • CWE-823

    Use of Out-of-range Pointer Offset