CVE-2021-20296

OpenEXR: Segv on unknown address in Imf_2_5::hufUncompress - Null Pointer dereference

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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. A crafted input file supplied by an attacker, that is processed by the Dwa decompression functionality of OpenEXR's IlmImf library, could cause a NULL pointer dereference. The highest threat from this vulnerability is to system availability.

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-476 · NULL Pointer Dereference