{"id":"CVE-2026-37459","details":"An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.","modified":"2026-07-09T19:18:41.883092Z","published":"2026-05-04T00:00:00Z","related":["ALSA-2026:24347","ALSA-2026:24370","openSUSE-SU-2026:10721-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37459.json","cna_assigner":"mitre"},"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37459.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24347"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24370"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-37459"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37459.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37459"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2466513"},{"type":"FIX","url":"https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/frrouting/frr","events":[{"introduced":"0"},{"fixed":"693a2e02687cdc9d16501275e05136edea9650d9"}],"database_specific":{"source":"REFERENCES"}}],"versions":["base_10.6","frr-10.7.0-dev","base_10.5","frr-10.6.0-dev","frr-10.5-dev","base_10.4","base_10.3","frr-10.4-dev","frr-10.3-dev","base_10.2","frr-10.2-dev","base_10.1","frr-10.0-dev","base_10.0","frr-9.2-dev","base_9.1","base_9.0","frr-9.1-dev","base_8.5","frr-9.0-dev","frr-8.4-rc","base_8.4","frr-8.5-dev","base_8.3","frr-8.4-dev","base_8.2","frr-8.3-dev","frr-8.1-rc1","base_8.1","frr-8.2-dev","8.1-dev","frr-8.1-dev","base_8.0","base_7.6","frr-8.0-dev","frr-7.6-dev","base_7.5","base_7.4","frr-7.5-dev","base_7.3","frr-7.4-dev","base_7.2","frr-7.3-dev","frr-7.2-dev","7.1_pulled","frr-7.1-dev","frr-6.1-dev","frr-5.1-dev","reindent-master-after","reindent-master-before","frr-3.1-dev","frr-3.0-branchpoint"],"database_specific":{"vanir_signatures_modified":"2026-07-09T19:18:41Z","source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-37459.json","vanir_signatures":[{"signature_version":"v1","target":{"function":"bgp_attr_nhc","file":"bgpd/bgp_attr.c"},"source":"https://github.com/frrouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9","id":"CVE-2026-37459-24ba694c","deprecated":false,"signature_type":"Function","digest":{"function_hash":"82989935978743524485069515540595131229","length":4148}},{"signature_version":"v1","target":{"file":"bgpd/bgp_attr.c"},"source":"https://github.com/frrouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9","id":"CVE-2026-37459-8bc40a04","deprecated":false,"signature_type":"Line","digest":{"line_hashes":["12661208992429748853917076216106026589","289669655143186982697976869697460209024","235394718307197755736613230944375927155","201357829393678812371077382055617799913"],"threshold":0.9}}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}