{"id":"UBUNTU-CVE-2025-8556","details":"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.","modified":"2026-01-20T18:46:36.977315Z","published":"2025-08-06T09:15:00Z","upstream":["CVE-2025-8556"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-8556"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-8556"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2371624"},{"type":"REPORT","url":"https://github.com/cloudflare/circl/security/advisories/GHSA-2x5j-vhc8-9cwm"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-8556"},{"type":"REPORT","url":"https://github.com/cloudflare/circl"},{"type":"REPORT","url":"https://github.com/cloudflare/circl/tree/v1.6.1"}],"affected":[{"package":{"name":"golang-github-cloudflare-circl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/golang-github-cloudflare-circl@1.0.0+20200724-1ubuntu1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0+20200724-1","1.0.0+20200724-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-cloudflare-circl-dev","binary_version":"1.0.0+20200724-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8556.json"}},{"package":{"name":"golang-github-cloudflare-circl","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/golang-github-cloudflare-circl@1.3.7-1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3-1","1.3.5-1","1.3.6-1","1.3.7-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-cloudflare-circl-dev","binary_version":"1.3.7-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8556.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}