What is CVE-2018-21010?

CVE-2018-21010 is a high-severity vulnerability in Uclouvain Openjpeg, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-09-05.

How severe is CVE-2018-21010?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2018-21010 known to be exploited?

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

Buffer overflow in Uclouvain Openjpeg

CVE-2018-21010

OpenJPEG before 2.3.1 has a heap buffer overflow in color_apply_icc_profile in bin/common/color.c.

Vulnerability class: Buffer Overflow

Published 2019-09-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.6th percentile), scored 2026-11-01.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Uclouvain Openjpeg
Debian Linux — versions 8.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

lists.debian.org/debian-lts-announce/2019/10/msg00009.html (mailing-list, Mailing List, Third Party Advisory)
security.gentoo.org/glsa/202101-29 (vendor-advisory, Third Party Advisory)
www.oracle.com//security-alerts/cpujul2021.html (Patch, Third Party Advisory)
github.com/uclouvain/openjpeg/commit/2e5ab1d9987831c981ff05862e8ccf1381ed58ea (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-21010?: CVE-2018-21010 is a high-severity vulnerability in Uclouvain Openjpeg, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-09-05.
How severe is CVE-2018-21010?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-21010 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.