6.5

CVE-2018-20846: uclouvain openjpeg Improper Input Validation

Modified
AliasesUBUNTU-CVE-2018-20846DEBIAN-CVE-2018-20846
Published 26-06-2019Last modified 05-08-2024

Vulnerability summary

CVE-2018-20846 is a medium (CVSS 6.5) Improper Input Validation vulnerability in uclouvain openjpeg. EPSS estimates a 2.17% chance of exploitation in the next 30 days, higher than 82.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
2.17%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
SUSE-SU-2022:1129-1SUSE-SU-2022:3802-1SUSE-SU-2022:4082-1

Timeline

  1. 26-06-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

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).

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.17%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.17% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu6 products
  • blenderAll versions (No fix recorded)
  • emscriptenAll versions (No fix recorded)
  • insighttoolkit4All versions (No fix recorded)
  • openjpegAll versions (No fix recorded)
  • qtwebengine-opensource-srcAll versions (No fix recorded)
Debian1 product
  • openjpeg2< 2.3.1-1
Uclouvain1 product

3 vendors · 8 products

References

5 links