Vulnerability record/PUBLISHED/Published Aug 6, 2025 08:48:17 UTC

CVE-2025-8556

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.

Base score3.7/ 10

SeverityLowCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityLow

Attack vectorNetworkAV

Attack complexityHighAC

Privileges requiredNonePR

User interactionNoneUI

ScopeUnchangedS

Confidentiality impactLowC

Integrity impactNoneI

Availability impactNoneA

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

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering Authorityredhat

Last updatedNov 6, 2026 17:46:51 UTC

PublishedAug 6, 2025 08:48:17 UTC

ReservedAug 4, 2025 14:05:14 UTC