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CVE-2026-5598VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-5598· High 8.9

Not known to be exploited · CVSS 8.9 High · fixed in Red Hat package updates : patch Red Hat bc-java soon.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 4.0 base score
8.9High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 59% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.84, 1.81.1, 1.80.2
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/S:P/AU:Y/U:Red

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Upgrade BC-JAVA and core to 1.84, 1.81.1 or 1.80.2.

Affected software

ProductAffectedFixed in
Legion of the Bouncy Castle Inc.BC-JAVAAffected
  • >=1.82 <1.84
Fixed in
  • 1.84
Legion of the Bouncy Castle Inc.BC-JAVAAffected
  • >=1.81 <1.81.1
Fixed in
  • 1.81.1
Legion of the Bouncy Castle Inc.BC-JAVAAffected
  • >=1.71 <1.80.2
Fixed in
  • 1.80.2
Mavenorg.bouncycastle/bc-javapkg:maven/org.bouncycastle/bc-javaOther threatsAffected
  • 1.71 – 1.84
6 affected builds
Fixed in–
GitHubcorepkg:github/coreOther threatsAffected
  • >=1.71 <1.80.2
  • >=1.81 <1.81.1
  • >=1.82 <1.84
Fixed in
  • 1.80.2
  • 1.81.1
  • 1.84

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A security update is available that upgrades the BouncyCastle library to version 1.84 or later, which fixes the private key leakage vulnerability. Users should apply the Red Hat JBoss Enterprise Application Platform 7.4.24 security update after ensuring all previously released errata are applied. It is recommended to back up all applications, configuration files, databases, and settings before applying the patch. Follow Red Hat's official guidance for applying updates: https://access.redhat.com/articles/11258.

Description

Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly application runtime. This asynchronous patch is a security update for Red Hat JBoss Enterprise Application Platform 7.4. Security Fix(es): * bouncycastle: BC-JAVA: private key leakage via non-constant time comparisons (CVE-2026-5598) A Red Hat Security Bulletin which addresses further details about this flaw is available in the References section. For more details about the security issue(s), including the impact, a CVSS score, acknowledgements, and other related information, refer to the CVE page(s) listed in the References section.

References

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