Heap-based Buffer Overflow in OpenEXR Software by Academy Software Foundation
CVE-2025-12840

7.8HIGH

Key Information:

Vendor

Academy Software Foundation

Status
Openexr
Vendor
CVE Published:
23 December 2025

What is CVE-2025-12840?

This vulnerability exists in the way OpenEXR parses EXR files, stemming from inadequate validation of the length of user-supplied data. Attackers can exploit this flaw by tricking users into visiting a malicious webpage or opening a compromised EXR file, leading to arbitrary code execution within the context of the affected process.

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Affected Version(s)

OpenEXR 3.4.0

References

https://www.zerodayinitiative.com/advisories/ZDI-25-991/
x_research-advisory

CVSS V3.0

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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