{"id":"UBUNTU-CVE-2025-8736","details":"A vulnerability, which was classified as critical, has been found in GNU cflow up to 1.8. Affected by this issue is the function yylex of the file c.c of the component Lexer. The manipulation leads to buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.","modified":"2026-05-20T16:24:02.554089292Z","published":"2025-08-08T19:15:00Z","upstream":["CVE-2025-8736"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-8736"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-8736"},{"type":"REPORT","url":"https://lists.gnu.org/archive/html/bug-cflow/2025-07/msg00001.html"},{"type":"REPORT","url":"https://drive.google.com/file/d/17lkJ5bSiQZoXLTg3bK-rGBt3kahN9Xse/view?usp=drive_link"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.319232"},{"type":"REPORT","url":"https://vuldb.com/?id.319232"},{"type":"REPORT","url":"https://vuldb.com/?submit.622329"},{"type":"REPORT","url":"https://www.gnu.org/"}],"affected":[{"package":{"name":"cflow","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/cflow?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.4+dfsg1-3ubuntu1","1:1.4+dfsg1-3ubuntu1.16.04.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"cflow","binary_version":"1:1.4+dfsg1-3ubuntu1.16.04.1~esm1"}],"priority_reason":"attack on the localhost"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8736.json"}},{"package":{"name":"cflow","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/cflow?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.4+dfsg1-3ubuntu1","1:1.4+dfsg1-3ubuntu1.18.04.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"cflow","binary_version":"1:1.4+dfsg1-3ubuntu1.18.04.1~esm1"}],"priority_reason":"attack on the localhost"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8736.json"}},{"package":{"name":"cflow","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/cflow?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.6-4"],"ecosystem_specific":{"priority_reason":"attack on the localhost","binaries":[{"binary_name":"cflow","binary_version":"1:1.6-4"},{"binary_name":"cflow-l10n","binary_version":"1:1.6-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8736.json"}},{"package":{"name":"cflow","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/cflow?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.6-4","1:1.6-6","1:1.7-2"],"ecosystem_specific":{"binaries":[{"binary_name":"cflow","binary_version":"1:1.7-2"},{"binary_name":"cflow-l10n","binary_version":"1:1.7-2"}],"priority_reason":"attack on the localhost"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8736.json"}},{"package":{"name":"cflow","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/cflow?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.7-4","1:1.7-5"],"ecosystem_specific":{"binaries":[{"binary_version":"1:1.7-5","binary_name":"cflow"},{"binary_name":"cflow-l10n","binary_version":"1:1.7-5"}],"priority_reason":"attack on the localhost"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8736.json"}},{"package":{"name":"cflow","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/cflow?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.7-5","1:1.8-1"],"ecosystem_specific":{"binaries":[{"binary_name":"cflow","binary_version":"1:1.8-1"},{"binary_name":"cflow-l10n","binary_version":"1:1.8-1"}],"priority_reason":"attack on the localhost"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8736.json"}},{"package":{"name":"cflow","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/cflow?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.8-1","1:1.8-1build1"],"ecosystem_specific":{"priority_reason":"attack on the localhost","binaries":[{"binary_name":"cflow","binary_version":"1:1.8-1build1"},{"binary_name":"cflow-l10n","binary_version":"1:1.8-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-8736.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"Ubuntu","score":"low"}]}