CVE-2025-22866

Timing sidechannel for P-256 on ppc64le in crypto/internal/nistec

CVSS 4 MEDIUMEPSS 0.3%

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

06 Feb 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

Go standard library · crypto/internal/nistec

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References

https://go.dev/cl/643735 https://go.dev/issue/71383 https://groups.google.com/g/golang-announce/c/xU1ZCHUZw3k https://pkg.go.dev/vuln/GO-2025-3447 https://security.netapp.com/advisory/ntap-20250221-0002/