{"id":"CVE-2026-48977","title":"OpenSlide is a C library for reading whole slide image files","summary":"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 fi…","severity":"high","cvss":7.7,"cvssVector":"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","cwe":["CWE-123","CWE-823","CWE-1284"],"vendor":"openslide","product":"openslide","affected":["openslide >= 3.4.1, < 4.0.1"],"published":"2026-09-17","updated":"2026-09-23","sourceUpdated":"2026-09-23T18:12:04.247","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48977","references":[{"url":"https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3","label":"security-advisories@github.com"},{"url":"https://github.com/openslide/openslide/pull/751","label":"security-advisories@github.com"},{"url":"https://github.com/openslide/openslide/releases/tag/v4.0.1","label":"security-advisories@github.com"},{"url":"https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00296,"epssPercentile":0.2246,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-18T20:07:02.848473Z"},"cvssSource":"cna","ingestedAt":"2026-09-17T21:29:16.980Z","slug":"CVE-2026-48977","body":"## Overview\n\nOpenSlide 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}