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.

CVSS 4.0

6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

6.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-10-14

Modified

2026-10-16

Record from

the NVD, synced 2026-10-19

References

• https://github.com/syoyo/tinyexr/blob/6f470c9ab24bf3992bc512ce07e8ecb00d9bf105/tinyexr.h#L10551-L10621
• https://github.com/syoyo/tinyexr/blob/6f470c9ab24bf3992bc512ce07e8ecb00d9bf105/tinyexr.h#L1207-L1266
• https://hackmd.io/@haind-pwn/tinyexr-multipart-header-stale-size-oob-read
• https://www.vulncheck.com/advisories/tinyexr-through-3.2.0-heap-out-of-bounds-read-via-parseexrmultipartheaderfrommemory
• https://hackmd.io/@haind-pwn/tinyexr-multipart-header-stale-size-oob-read

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