Out-of-bounds Read in Syoyo Tinyexr
CVE-2026-110597
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/tinyexr-multipart-header-stale-size-oob-read (third-party-advisory)
- github.com/syoyo/tinyexr/blob/6f470c9ab24bf3992bc512ce07e8ecb00d9bf105/tinyexr.h (technical-description)
- github.com/syoyo/tinyexr/blob/6f470c9ab24bf3992bc512ce07e8ecb00d9bf105/tinyexr.h (technical-description)
- www.vulncheck.com/advisories/tinyexr-through-3.2.0-heap-out-of-bounds-read-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110597?
- CVE-2026-110597 is a medium-severity vulnerability in Syoyo Tinyexr, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-10-14.
- How severe is CVE-2026-110597?
- Medium severity. CVSS v3 base score is 6.1 out of 10.