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TI-2026-74091 Aliases CVE-2026-110597GHSA-jf92-wjh7-86g3

Heap out-of-bounds read in Tinyexr multipart EXR header parsing

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

Tinyexr through 3.2.0 contains a heap out-of-bounds read in ParseEXRMultipartHeaderFromMemory() caused by a stale remaining-size value (CWE-125). An attacker can supply a crafted multi-part EXR file whose later part headers bypass ReadAttribute() bounds checks, so the flaw can crash the application or leak adjacent heap memory into attribute values.

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

Description from the CNA

Tinyexr through 3.2.0 contains a heap out-of-bounds read vulnerability in ParseEXRMultipartHeaderFromMemory() that allows attackers to read beyond buffers due to a stale remaining-size value. Attackers can supply a crafted multi-part EXR file whose later part headers bypass ReadAttribute() bounds checks, crashing applications or leaking adjacent heap memory into attribute values.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00249 16th 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
syoyotinyexrup to 3.2.0—No fix listedCNA
  • tinyexr Vendorsyoyo Affected up to 3.2.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for tinyexr.

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. 2026-10-14 Threatist record created from CVE-2026-110597
  2. 2026-10-14 Alias added: GHSA-jf92-wjh7-86g3
  3. 2026-10-15 CISA SSVC decision points changed
  4. 2026-10-18 Affected versions changed · Red Hat
  5. 2026-10-18 CVSS score added · Red Hat

References

Advisory 1

Other 2

  • TI-2026-49934 tinyobjloader-c Stack Buffer Overflow in MTL Material File Line Parsing CVSS 3.1HIGH 7.8

Sources

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