Heap-based Buffer Overflow in Academy Software Foundation OpenEXR
CVE-2025-12839

7.8HIGH

Key Information:

Vendor

Academy Software Foundation

Status
Openexr
Vendor
CVE Published:
23 December 2025

What is CVE-2025-12839?

A heap-based buffer overflow vulnerability exists in the Academy Software Foundation OpenEXR due to inadequate validation of EXR file inputs. This flaw allows remote attackers to execute arbitrary code when a user opens a malicious EXR file or accesses a compromised web page. Proper mitigations must be in place to prevent exploitation, as the flaw hinges on exploiting the parsing mechanisms of EXR files.

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Affected Version(s)

OpenEXR 3.4.0

References

https://www.zerodayinitiative.com/advisories/ZDI-25-990/
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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