Read the docs
TI-2026-74914 Aliases CVE-2026-111130GHSA-5jq9-3x2q-j76q

Out-of-bounds read in OpenSlide MIRAX reader crashes apps

Priority MEDIUM 64CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

OpenSlide through 4.0.1 contains a heap out-of-bounds read (CWE-125) in its MIRAX reader, where get_tile_position reads past the slide_positions array. A local attacker can supply a crafted MIRAX slide with inconsistent Slidedat.ini values, and a user must open it. Applications that open the slide can crash and have their tile geometry corrupted.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00198 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
openslideopenslideup to 4.0.1—No fix listedCNA
  • openslide Vendoropenslide Affected up to 4.0.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for openslide.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-111130
  2. 2026-10-16 Priority changed: MEDIUM → LOW
  3. 2026-10-18 Affected versions changed · Red Hat
  4. 2026-10-18 CVSS score added · Red Hat
  5. 2026-10-21 Alias added: GHSA-5jq9-3x2q-j76q
  6. 2026-10-21 CISA SSVC decision points changed
  7. 2026-10-21 Priority changed: LOW → MEDIUM

References

Other 4

  • TI-2026-36233 OpenSlide: Arbitrary memory write with crafted Ventana BIF file CVSS 4.0HIGH 7.7
  • TI-2026-39437 OpenSlide: openslide_read_region() returns uninitialized memory with libtiff 4.7.1 CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences