CVE-2021-39516

6.5 MEDIUM

An issue was discovered in libjpeg through 2020021

Published: 2021-09-20 · Last updated: 2026-06-17

Severity and scoring

CVSS: 6.5 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE: CWE-476

Affected products

Vendor	Product
jpeg	libjpeg

Description

An issue was discovered in libjpeg through 2020021. A NULL pointer dereference exists in the function HuffmanDecoder::Get() located in huffmandecoder.hpp. It allows an attacker to cause Denial of Service.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-39516
[Exploit reference]https://github.com/thorfdbg/libjpeg/issues/42
[Exploit reference]https://github.com/thorfdbg/libjpeg/issues/42

Related CVEs

Same vendor

CVE-2021-39520 — An issue was discovered in libjpeg through 2020021 (6.5 MEDIUM)
CVE-2021-39519 — An issue was discovered in libjpeg through 2020021 (6.5 MEDIUM)
CVE-2021-39518 — An issue was discovered in libjpeg through 2020021 (6.5 MEDIUM)
CVE-2021-39517 — An issue was discovered in libjpeg through 2020021 (6.5 MEDIUM)
CVE-2021-39515 — An issue was discovered in libjpeg through 2020021 (6.5 MEDIUM)

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