What’s Vulnerable › Vulnerabilities

CVE-2026-110597: Tinyexr through 3.2.0 Heap Out-of-Bounds Read via ParseEXRMultipartHeaderFromMemory

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-16
• Weakness: CWE-125

Description

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.

Affected products

• syoyo tinyexr: through 3.2.0

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

Get alerted when CVE-2026-110597 or the next vulnerability affects your stack