FKIE_CVE-2026-5598
Vulnerability from fkie_nvd - Published: 2026-04-15 10:16 - Updated: 2026-06-30 03:21
Severity
Summary
Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules).
This vulnerability is associated with program files FrodoEngine.Java.
This issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java/",
"defaultStatus": "unaffected",
"modules": [
"core"
],
"packageName": "core",
"platforms": [
"all"
],
"product": "BC-JAVA",
"programFiles": [
"FrodoEngine.java"
],
"repo": "https://github.com/bcgit/bc-java",
"vendor": "Legion of the Bouncy Castle Inc.",
"versions": [
{
"lessThan": "1.80.2",
"status": "affected",
"version": "1.71",
"versionType": "maven"
},
{
"lessThan": "1.81.1",
"status": "affected",
"version": "1.81",
"versionType": "maven"
},
{
"lessThan": "1.84",
"status": "affected",
"version": "1.82",
"versionType": "maven"
}
]
}
],
"source": "91579145-5d7b-4cc5-b925-a0262ff19630"
},
{
"affectedData": [
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7"
],
"defaultStatus": "affected",
"product": "Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8"
],
"defaultStatus": "affected",
"product": "Red Hat JBoss EAP 7.4 ELS for RHEL 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8"
],
"defaultStatus": "affected",
"product": "Red Hat JBoss EAP 8.1 for RHEL 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9"
],
"defaultStatus": "affected",
"product": "Red Hat JBoss EAP 7.4 ELS for RHEL 9",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"
],
"defaultStatus": "affected",
"product": "Red Hat JBoss EAP 8.1 for RHEL 9",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:7",
"cpe:/a:redhat:jboss_enterprise_application_platform:7.4"
],
"defaultStatus": "affected",
"product": "Red Hat JBoss Enterprise Application Platform 7",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"
],
"defaultStatus": "affected",
"product": "Red Hat JBoss Enterprise Application Platform 8.1",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_fuse:7"
],
"defaultStatus": "affected",
"product": "Red Hat Fuse 7",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:cryostat:4"
],
"defaultStatus": "unaffected",
"product": "Cryostat 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:ocp_tools"
],
"defaultStatus": "unaffected",
"product": "OpenShift Developer Tools and Services",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:amq_broker:7"
],
"defaultStatus": "unaffected",
"product": "Red Hat AMQ Broker 7",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:amq_clients:2023"
],
"defaultStatus": "unaffected",
"product": "Red Hat AMQ Clients",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:camel_quarkus:3"
],
"defaultStatus": "unaffected",
"product": "Red Hat build of Apache Camel 4 for Quarkus 3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:camel_spring_boot:4"
],
"defaultStatus": "unaffected",
"product": "Red Hat build of Apache Camel for Spring Boot 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:apicurio_registry:3"
],
"defaultStatus": "unaffected",
"product": "Red Hat build of Apicurio Registry 3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:debezium:2"
],
"defaultStatus": "unaffected",
"product": "Red Hat build of Debezium 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:debezium:3"
],
"defaultStatus": "unaffected",
"product": "Red Hat build of Debezium 3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"defaultStatus": "unaffected",
"product": "Red Hat Build of Keycloak",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:quarkus:3"
],
"defaultStatus": "unaffected",
"product": "Red Hat build of Quarkus",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_data_grid:8"
],
"defaultStatus": "unaffected",
"product": "Red Hat Data Grid 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:8"
],
"defaultStatus": "unaffected",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
],
"defaultStatus": "unaffected",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8"
],
"defaultStatus": "unaffected",
"product": "Red Hat JBoss Enterprise Application Platform 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jbosseapxp"
],
"defaultStatus": "unaffected",
"product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_ai"
],
"defaultStatus": "unaffected",
"product": "Red Hat OpenShift AI (RHOAI)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_devspaces:3"
],
"defaultStatus": "unaffected",
"product": "Red Hat OpenShift Dev Spaces",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_bpms_platform:7"
],
"defaultStatus": "unaffected",
"product": "Red Hat Process Automation 7",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:satellite:6"
],
"defaultStatus": "unaffected",
"product": "Red Hat Satellite 6",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7"
],
"defaultStatus": "unaffected",
"product": "Red Hat Single Sign-On 7",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:amq_streams:2"
],
"defaultStatus": "unaffected",
"product": "streams for Apache Kafka 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:amq_streams:3"
],
"defaultStatus": "unaffected",
"product": "streams for Apache Kafka 3",
"vendor": "Red Hat"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules).\n\n This vulnerability is associated with program files FrodoEngine.Java.\n\n\n\nThis issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84."
}
],
"id": "CVE-2026-5598",
"lastModified": "2026-06-30T03:21:08.307",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "YES",
"Recovery": "NOT_DEFINED",
"Safety": "PRESENT",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 8.9,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "UNREPORTED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "RED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:X/V:X/RE:X/U:Red",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "91579145-5d7b-4cc5-b925-a0262ff19630",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-5598",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-15T13:11:48.318645Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-04-15T10:16:49.757",
"references": [
{
"source": "91579145-5d7b-4cc5-b925-a0262ff19630",
"url": "https://github.com/bcgit/bc-java/commit/8692e6b2b191fc4aafa32545c7a78bdb9bf110c5"
},
{
"source": "91579145-5d7b-4cc5-b925-a0262ff19630",
"url": "https://github.com/bcgit/bc-java/commit/94abbd56413dfdac651fd878bc60253871ef5e87"
},
{
"source": "91579145-5d7b-4cc5-b925-a0262ff19630",
"url": "https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%905598"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/errata/RHSA-2026:12267"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/errata/RHSA-2026:12269"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/errata/RHSA-2026:18054"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/errata/RHSA-2026:18055"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/errata/RHSA-2026:18059"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/security/cve/CVE-2026-5598"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458635"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5598.json"
}
],
"sourceIdentifier": "91579145-5d7b-4cc5-b925-a0262ff19630",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-385"
}
],
"source": "91579145-5d7b-4cc5-b925-a0262ff19630",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-385"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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