CVE-2025-22866

Name: CVE-2025-22866
Creator: NVD / NIST
Published: 2025-02-06T17:15:21.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2025-22866 is a medium-severity vulnerability rated 4/10 on the CVSS scale. Due to the usage of a variable time instruction in the assembly implementation of an internal function, a small number of bits of secret scalars are leaked on the ppc64le architecture. Due to the way this function is used, we do not believe this leakage is enough to allow recovery of the private key when P-256 is used in any well known protocols.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

Due to the usage of a variable time instruction in the assembly implementation of an internal function, a small number of bits of secret scalars are leaked on the ppc64le architecture. Due to the way this function is used, we do not believe this leakage is enough to allow recovery of the private key when P-256 is used in any well known protocols.

Metrics

CVSS 3.1

4/10

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

EPSS Probability

0.27%

18.9th percentile

Probability of exploitation in the next 30 days. Learn more

References

Timeline

Published: Feb 6, 2025
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2025-22866?

How severe is CVE-2025-22866?

CVE-2025-22866 has a CVSS score of 4/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2025-22866?

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-2025-22866?

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

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Source: NVD / NIST