---
id: CVE-2026-110597
title: >-
  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
summary: >-
  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…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H'
cwe:
  - CWE-125
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T18:17:34.423'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110597'
references:
  - url: >-
      https://github.com/syoyo/tinyexr/blob/6f470c9ab24bf3992bc512ce07e8ecb00d9bf105/tinyexr.h#L10551-L10621
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/syoyo/tinyexr/blob/6f470c9ab24bf3992bc512ce07e8ecb00d9bf105/tinyexr.h#L1207-L1266
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@haind-pwn/tinyexr-multipart-header-stale-size-oob-read'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/tinyexr-through-3.2.0-heap-out-of-bounds-read-via-parseexrmultipartheaderfrommemory
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@haind-pwn/tinyexr-multipart-header-stale-size-oob-read'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
ingestedAt: '2026-10-14T15:36:14.001Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.