Medium [CVE-2026-57914] Denial of Service via deeply nested ASN.1 structure
This medium-severity Red Hat Linux advisory covers CVE-2026-57914 affecting Red Hat AMQ Clients, Red Hat Build of Keycloak, Red Hat Data Grid 8.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
By sending a deeply nested ASN1 structure to a Apache Kerby client or service, it's possible to trigger a StackOverFlow Exception which can lead to denial of service issues. Users are recommended to upgrade to version 2.1.2, which fixes this issue.
A remote attacker could send a deeply nested Abstract Syntax Notation One (ASN.1) structure to an Apache Kerby client or service, triggering a stack overflow exception. This could lead to a denial of service (DoS) condition, making the service unavailable to legitimate users.
This Moderate flaw in Apache Kerby, as used in several Red Hat products, allows a remote attacker to trigger a denial of service. By sending a specially crafted, deeply nested ASN.1 structure to a vulnerable client or service, an attacker can cause a stack overflow, leading to service unavailability.
This impact is considered Moderate due to the potential for disruption of critical services. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-776. Affected Red Hat products: Red Hat AMQ Clients; Red Hat Build of Keycloak; Red Hat Data Grid 8; Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform Expansion Pack; Red Hat OpenShift AI (RHOAI); Red Hat Single Sign-On 7; streams for Apache Kafka 2; streams for Apache Kafka 3.
Red Hat does not currently list a fixing RHSA for this CVE.
Is CVE-2026-57914 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-57914 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-57914?
Upgrade to a fixed release named by Red Hat:
- 2.1.2
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
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