CVE-2018-20846

Name: CVE-2018-20846
Creator: NVD / NIST
Published: 2019-06-26T18:15:10.01+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.17%

Last modified Jun 17, 2026

CVE-2018-20846 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Out-of-bounds accesses in the functions pi_next_lrcp, pi_next_rlcp, pi_next_rpcl, pi_next_pcrl, pi_next_rpcl, and pi_next_cprl in openmj2/pi.c in OpenJPEG through 2.3.0 allow remote attackers to cause a denial of service (application crash).. EPSS estimates a 2.17% chance of exploitation in the next 30 days.

Description

Out-of-bounds accesses in the functions pi_next_lrcp, pi_next_rlcp, pi_next_rpcl, pi_next_pcrl, pi_next_rpcl, and pi_next_cprl in openmj2/pi.c in OpenJPEG through 2.3.0 allow remote attackers to cause a denial of service (application crash).

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

2.17%

80.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Uclouvain	Openjpeg	<= 2.3.0

References

http://www.securityfocus.com/bid/108921Broken Link, Third Party Advisory, VDB Entry
https://github.com/uclouvain/openjpeg/pull/1168/commits/c277159986c80142180fbe5efb256bbf3bdf3edcPatch
http://www.securityfocus.com/bid/108921Broken Link, Third Party Advisory, VDB Entry
https://github.com/uclouvain/openjpeg/pull/1168/commits/c277159986c80142180fbe5efb256bbf3bdf3edcPatch

Timeline

Published: Jun 26, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20846?

How severe is CVE-2018-20846?

CVE-2018-20846 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.17% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20846?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20846?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST