How to fix EUVD-2025-18921?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Is Hydra affected by EUVD-2025-18921?

Organizations using Hydra should be aware of moderate risk from CVE-2025-48886 rated CVSS 4.8. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and monitor for exploitation.

Hydra EUVD-2025-18921

| CVE-2025-48886 MEDIUM

Improper Handling of Exceptional Conditions (CWE-755)

2025-06-19 [email protected]

Information Disclosure

4.8

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Patch available

Apr 16, 2026 - 05:29 EUVD

0.22.0

EUVD ID Assigned

Mar 15, 2026 - 00:08 euvd

EUVD-2025-18921

Analysis Generated

Mar 15, 2026 - 00:08 vuln.today

CVE Published

Jun 19, 2025 - 15:15 nvd

MEDIUM 4.8

DescriptionNVD

Hydra is a layer-two scalability solution for Cardano. Prior to version 0.22.0, the process assumes L1 event finality and does not consider failed transactions. Currently, Cardano L1 is monitored for certain events which are necessary for state progression. At the moment, Hydra considers those events as finalized as soon as they are recognized by the node participants making such transactions the target of re-org attacks. The system does not currently consider the fact that failed transactions on the Cardano L1 can indeed appear in blocks because these transactions are so infrequent. This issue has been patched in version 0.22.0.

AnalysisAI

A security vulnerability in Hydra (CVSS 4.8). Remediation should follow standard vulnerability management procedures.

Technical ContextAI

Vulnerability type not specified by vendor. Affects Hydra.

RemediationAI

Monitor vendor channels for patch availability.

EUVD-2025-18921 vulnerability details – vuln.today

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