Description
OpenSlide through 4.0.1 contains a heap out-of-bounds read vulnerability in the MIRAX reader that allows attackers to read past the slide_positions array via crafted Slidedat.ini values. Attackers can supply a MIRAX slide whose CameraImageDivisionsPerSide does not evenly divide the image counts, crashing applications that open it and corrupting tile geometry.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
OpenSlide openslide
Default version status: unaffected
0 to ≤ 4.0.1affected
pkg:github/openslide/openslideReferences
- https://hackmd.io/@haind-pwn/openslide-mirax-slide-position-index-oob-read ↗
- https://github.com/openslide/openslide/blob/fe79a9713bef2bfd64bbfefd15704060764b1274/src/openslide-vendor-mirax.c#L611-L635 ↗
- https://github.com/openslide/openslide/blob/fe79a9713bef2bfd64bbfefd15704060764b1274/src/openslide-vendor-mirax.c#L1033-L1034 ↗
- https://github.com/openslide/openslide ↗
- https://www.vulncheck.com/advisories/openslide-through-4.0.1-heap-out-of-bounds-read-via-mirax-get-tile-position ↗
- https://hackmd.io/@haind-pwn/cve-2026-111130-openslide-mirax-slide-position-index-oob-read ↗