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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 1 Nov 2026, 00:36 UTC

CVSS 4.0 base score
8.9High
How severe the flaw is on the 0–10 CVSS scale.
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 31 Oct 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.

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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