EUVD-2026-82936
GHSA-mg33-j52w-c777
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable and unauthenticated (AV:N/PR:N), but reliable heap exhaustion needs large/repeated payloads tuned to the target (AC:H); pure availability impact so C:N/I:N/A:H.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
Lifecycle Timeline
2DescriptionCVE.org
A flaw was found in the DERDecoder class within wildfly-elytron-asn1. A remote attacker can exploit this resource exhaustion vulnerability by sending a specially crafted DER (Distinguished Encoding Rules) payload. The decoder attempts to allocate excessive memory based on an inflated length value without proper validation, leading to Java Virtual Machine (JVM) memory exhaustion. This results in a remote Denial of Service (DoS) for services that process untrusted DER/ASN.1 input, including SASL (Simple Authentication and Security Layer) authentication mechanisms and X.500 certificate principal parsing paths.
AnalysisAI
JVM memory exhaustion in the wildfly-elytron-asn1 DERDecoder allows unauthenticated remote attackers to exhaust heap on any service that feeds untrusted DER/ASN.1 bytes into the library, notably SASL authentication flows and X.500 certificate principal parsing. The decoder reads an attacker-supplied length value and attempts a corresponding allocation without validating it against the actual remaining input, so a crafted payload can force an oversized allocation and destabilize or crash the JVM (availability impact only, CVSS 5.9, AV:N/AC:H/PR:N/UI:N/C:N/I:N/A:H, CWE-770). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target to process attacker-controlled DER/ASN.1 input through the wildfly-elytron-asn1 DERDecoder - specifically reachable via SASL authentication mechanisms or X.500 certificate principal parsing paths. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a moderate-severity, single-signal availability issue rather than an urgent priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch or fixed library version has been identified at time of analysis, so remediation currently depends on tracking Red Hat errata for the products listed above and applying updated wildfly-elytron-asn1 packages as they are published; monitor https://access.redhat.com/security/cve/CVE-2026-10832 and https://bugzilla.redhat.com/show_bug.cgi?id=2484703 for fix status. … Detailed patch versions, workarounds, and compensating controls in full report. |
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