CVE-2021-39519

Published: Sep 20, 2021Modified: Jun 17, 2026

6.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitability: 2.8 / Impact: 3.6

Source: NVD

Description

An issue was discovered in libjpeg through 2020021. A NULL pointer dereference exists in the function BlockBitmapRequester::PullQData() located in blockbitmaprequester.cpp It allows an attacker to cause Denial of Service.

Affected (1)

Products: Jpeg: Libjpeg

Jpeg

1 product

Libjpeg

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Jpeg Libjpeg	Up to 2020021

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (2)

https://github.com/thorfdbg/libjpeg/issues/28

Source: cve@mitre.org

ExploitIssue TrackingPatchThird Party Advisory

https://github.com/thorfdbg/libjpeg/issues/28

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitIssue TrackingPatchThird Party Advisory

Timeline

No history available yet.