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Ruby. The Ruby CVE-2025-0306

HIGH
Covert Timing Channel (CWE-385)
2025-01-09 secalert@redhat.com
Information Disclosure
7.4
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
7.4 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SUSE
HIGH
qualitative
Red Hat
7.4 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

3
Patch released
Apr 02, 2026 - 20:30 nvd
Patch available
Analysis Generated
Mar 28, 2026 - 18:02 vuln.today
CVE Published
Jan 09, 2025 - 04:15 nvd
HIGH 7.4

DescriptionCVE.org

A vulnerability was found in Ruby. The Ruby interpreter is vulnerable to the Marvin Attack. This attack allows the attacker to decrypt previously encrypted messages or forge signatures by exchanging a large number of messages with the vulnerable service.

AnalysisAI

A vulnerability was found in Ruby. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-385. A vulnerability was found in Ruby. The Ruby interpreter is vulnerable to the Marvin Attack. This attack allows the attacker to decrypt previously encrypted messages or forge signatures by exchanging a large number of messages with the vulnerable service.

Affected ProductsAI

Ruby. The Ruby interpreter.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Vendor StatusVendor

SUSE

Severity: High
Product Status
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CVE-2025-0306 vulnerability details – vuln.today
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