CVE-2026-111130
OpenSlide through 4.0.1 Heap Out-of-Bounds Read via MIRAX get_tile_position
OpenSlide openslide
CVSS
6.9MediumExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 21 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.13%Chance of exploitation activity in the next 30 days, higher than 2% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- openslideaffected: all versions through 4.0.1CVE List
References 6
- vulncheck.com/advisories/openslide-through-4.0.1-heap-out-of-bounds-read-via-mirax-get-tile-positionAdvisoryvia CVE List
- hackmd.io/@haind-pwn/cve-2026-111130-openslide-mirax-slide-position-index-oob-readExploitvia CVE List
- hackmd.io/@haind-pwn/openslide-mirax-slide-position-index-oob-readReferencevia CVE List
- github.com/openslide/openslide/blob/fe79a9713bef2bfd64bbfefd15704060764b1274/src/openslide-vendor-mirax.c#L611-L635Referencevia CVE List
- github.com/openslide/openslide/blob/fe79a9713bef2bfd64bbfefd15704060764b1274/src/openslide-vendor-mirax.c#L1033-L1034Referencevia CVE List
- github.com/openslide/openslideReferencevia CVE List