CVE-2021-28904

libyang: NULL pointer dereference in ext_get_plugin()

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · March 7, 2021

Updated · November 22, 2025

Description

A flaw was found in libyang. A NULL pointer dereference in ext_get_plugin function allows a remote attacker to crash an application that uses libyang with user-controlled YANG data. The highest threat from this vulnerability is the service 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 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference