What is CVE-2026-44663?

CVE-2026-44663 is a medium-severity vulnerability in Academysoftwarefoundation Openexr, classified under Integer Overflow or Wraparound. CVSS score: 6.1/10. Published 2026-06-18.

How severe is CVE-2026-44663?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Buffer overflow in Academysoftwarefoundation Openexr

CVE-2026-44663

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.11, an integer overflow in ht_undo_impl() in src/lib/OpenEXRCore/internal_ht.cpp…

Vulnerability class: Integer Overflow

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:N/I:L/A:H.

Affected products

Academysoftwarefoundation Openexr — versions >= 3.4.0, < 3.4.11

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-44663?: CVE-2026-44663 is a medium-severity vulnerability in Academysoftwarefoundation Openexr, classified under Integer Overflow or Wraparound. CVSS score: 6.1/10. Published 2026-06-18.
How severe is CVE-2026-44663?: Medium severity. CVSS v3 base score is 6.1 out of 10.