CVE-2021-20300

OpenEXR: Integer-overflow in Imf_2_5::hufUncompress

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Severity

Low

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · February 15, 2021

Updated · November 22, 2025

Description

A flaw was found in OpenEXR's hufUncompress function in OpenEXR/IlmImf/ImfHuf.cpp. This flaw allows an attacker who can submit a crafted file that is processed by OpenEXR, to trigger an integer overflow. The highest threat from this vulnerability is to system availability.

Statement

This flaw does not affect OpenEXR shipped with Red Hat Enterprise Linux 6, 7, or 8 because the vulnerable code was introduced in a newer version of OpenEXR.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-190 · Integer Overflow or Wraparound