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CVE-2025-8556

3.7 · LOW

A flaw was found in CIRCL's implementation of the FourQ elliptic curve.

Published Aug 6, 2025CWE-1287EPSS 0.50%

Overview

CVE-2025-8556 is a low-severity vulnerability. It was published on August 6, 2025 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/security/cve/CVE-2025-8556Refbugzilla.redhat.com/show_bug.cgi?id=2371624GitHubgithub.com/cloudflare/circlGitHubgithub.com/cloudflare/circl/security/advisories/GHSA-2x5j-vhc8-9cwmGitHubgithub.com/cloudflare/circl/tree/v1.6.1Refnews.ycombinator.com/item?id=45669593Refwww.botanica.software/blog/cryptographic-issues-in-cloudflares-circl-fourq-implementation

How CyberStrike helps

Frequently asked questions

What is CVE-2025-8556?

CVE-2025-8556 is a low-severity vulnerability. It was published on August 6, 2025 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2025-8556?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-8556?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-8556?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-8556 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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