RHSA-2026:55787: java-21-openjdk Red Hat
CVSS: 6.8v3.1MediumPublished
Published 20-08-2026Last modified 10-10-2026
Vulnerability summary
RHSA-2026:55787 is a medium (CVSS 6.8) vulnerability in java-21-openjdk Red Hat.
CVSS score
6.8/10
010
Medium · v3.1 (OSV · Red hat), selected by version preferenceEPSS score
Not scored
0%100%
No EPSS score yetKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 3 · Downstream 0Timeline
- 20-08-2026PublishedVulnerability first disclosed.
- 10-10-2026Last modifiedVulnerability information updated.
Description
Red Hat Security Advisory: java-21-openjdk security update
CVSS metrics
1 score · 1 source · 1 versionMedium 6.8Preferred score · OSV · Red hat (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:NSourcesSingle source
EPSS trend
No EPSS score has been published for this record yet.
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Redhat33 products
- java-21-openjdk< 1:21.0.12.1.1-1.1.el10 | < 1:21.0.12.1.1-1.2.el10 | < 1:21.0.12.1.1-1.1.el8 | < 1:21.0.12.1.1-1.1.el9 | < 1:21.0.12.1.1-1.2.el9
- java-21-openjdk-debuginfo< 1:21.0.12.1.1-1.1.el10 | < 1:21.0.12.1.1-1.2.el10 | < 1:21.0.12.1.1-1.1.el8 | < 1:21.0.12.1.1-1.1.el9 | < 1:21.0.12.1.1-1.2.el9
- java-21-openjdk-debugsource< 1:21.0.12.1.1-1.1.el10 | < 1:21.0.12.1.1-1.2.el10 | < 1:21.0.12.1.1-1.1.el8 | < 1:21.0.12.1.1-1.1.el9 | < 1:21.0.12.1.1-1.2.el9
- java-21-openjdk-demo< 1:21.0.12.1.1-1.1.el10 | < 1:21.0.12.1.1-1.2.el10 | < 1:21.0.12.1.1-1.1.el8 | < 1:21.0.12.1.1-1.1.el9 | < 1:21.0.12.1.1-1.2.el9
- java-21-openjdk-demo-fastdebug< 1:21.0.12.1.1-1.1.el10 | < 1:21.0.12.1.1-1.2.el10 | < 1:21.0.12.1.1-1.1.el8 | < 1:21.0.12.1.1-1.1.el9 | < 1:21.0.12.1.1-1.2.el9
1 vendor · 33 products