CVE-2025-0306

HIGHCVSS 7.4/10EPSS 0.63%

Last modified

CVE-2025-0306 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. A vulnerability was found in Ruby. The Ruby interpreter is vulnerable to the Marvin Attack. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.4/10

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

EPSS Probability
0.63%

45.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-0306?
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.
How severe is CVE-2025-0306?
CVE-2025-0306 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.
How do I fix CVE-2025-0306?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-0306?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST