CVE-2025-8556
CIRCL-Fourq: Missing and wrong validation can lead to incorrect results in github.com/cloudflare/circl
3.7
LOW
CVSS 3.1
EPSS 0.09%
Description
A flaw was found in CIRCL's implementation of the FourQ elliptic curve. This vulnerability allows an attacker to compromise session security via low-order point injection and incorrect point validation during Diffie-Hellman key exchange.
How to fix CVE-2025-8556
To remediate CVE-2025-8556, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 1.6.1 or later
- —upgrade to 1.6.1 or later
Is CVE-2025-8556 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0
- from 0, < 1.6.1
- from 0, < 1.6.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |