What is CVE-2021-39514?

CVE-2021-39514 is a medium-severity vulnerability in Jpeg Libjpeg, classified under Incorrect Comparison. CVSS score: 6.5/10. Published 2021-09-20.

How severe is CVE-2021-39514?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-39514 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Jpeg Libjpeg

CVE-2021-39514

An issue was discovered in libjpeg through 2020021. An uncaught floating point exception in the function ACLosslessScan::ParseMCU() located in aclosslessscan.cpp. It allows an attacker to cause Denial of Service.

EPSS: 0.009 (54.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Jpeg Libjpeg
N/a — versions n/a

Weakness classification (CWE)

CWE-697 — Incorrect Comparison

Public proof-of-concept exploits

seviezhou/Kraken

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-39514?: CVE-2021-39514 is a medium-severity vulnerability in Jpeg Libjpeg, classified under Incorrect Comparison. CVSS score: 6.5/10. Published 2021-09-20.
How severe is CVE-2021-39514?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-39514 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.