CVE-2018-20847

Name: CVE-2018-20847
Creator: NVD / NIST
Published: 2019-06-26T18:15:10.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.17%

Last modified Jun 17, 2026

CVE-2018-20847 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An improper computation of p_tx0, p_tx1, p_ty0 and p_ty1 in the function opj_get_encoding_parameters in openjp2/pi.c in OpenJPEG through 2.3.0 can lead to an integer overflow.. EPSS estimates a 2.17% chance of exploitation in the next 30 days.

Description

An improper computation of p_tx0, p_tx1, p_ty0 and p_ty1 in the function opj_get_encoding_parameters in openjp2/pi.c in OpenJPEG through 2.3.0 can lead to an integer overflow.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.17%

80.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Uclouvain	Openjpeg	<= 2.3.0
Debian	Debian Linux	8.0

References

http://www.securityfocus.com/bid/108921Broken Link, Third Party Advisory, VDB Entry
https://github.com/uclouvain/openjpeg/commit/5d00b719f4b93b1445e6fb4c766b9a9883c57949Patch
https://github.com/uclouvain/openjpeg/issues/431Issue Tracking, Patch, Third Party Advisory
https://github.com/uclouvain/openjpeg/pull/1168/commits/c58df149900df862806d0e892859b41115875845Patch
https://lists.debian.org/debian-lts-announce/2019/07/msg00010.htmlIssue Tracking, Third Party Advisory
http://www.securityfocus.com/bid/108921Broken Link, Third Party Advisory, VDB Entry
https://github.com/uclouvain/openjpeg/commit/5d00b719f4b93b1445e6fb4c766b9a9883c57949Patch
https://github.com/uclouvain/openjpeg/issues/431Issue Tracking, Patch, Third Party Advisory
https://github.com/uclouvain/openjpeg/pull/1168/commits/c58df149900df862806d0e892859b41115875845Patch
https://lists.debian.org/debian-lts-announce/2019/07/msg00010.htmlIssue Tracking, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2018-20847?

An improper computation of p_tx0, p_tx1, p_ty0 and p_ty1 in the function opj_get_encoding_parameters in openjp2/pi.c in OpenJPEG through 2.3.0 can lead to an integer overflow.

How severe is CVE-2018-20847?

CVE-2018-20847 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.17% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20847?

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-2018-20847?

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

Scan your code now

Source: NVD / NIST