What is the CVSS score of CVE-2025-0306?

CVE-2025-0306 has a CVSS 3.1 base score of 7.4 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.4%.

Which versions of Red Hat are affected by CVE-2025-0306?

Organizations using A vulnerability face moderate risk from CVE-2025-0306 rated CVSS 7.4. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2025-0306?

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

Red Hat CVE-2025-0306

HIGH

Covert Timing Channel (CWE-385)

2025-01-09 secalert@redhat.com

Information Disclosure Red Hat Suse

7.4

CVSS 3.1

CVSS VectorNVD

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

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

DescriptionNVD

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.