CVE-2021-39517

PoC —

CVSS 3.1

6.5 medium

EPSS

<1%p57

Published

Sep 20, 2021 (Sep 20, 2021)

Modified

Jun 17, 2026

Description

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

Vendors: jpeg
Products: libjpeg
Weakness: CWE-476
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.9%)

In the news0 stories

No ingested article mentions this CVE yet.