{"id":"CVE-2026-37459","aliases":["ALSA-2026:24347","ALSA-2026:24370","AZL-86217","DEBIAN-CVE-2026-37459","EUVD-2026-27047","GHSA-hmpg-chwg-jvg8","RHSA-2026:24347","RHSA-2026:24370","RLSA-2026:24347","RLSA-2026:24370","UBUNTU-CVE-2026-37459","openSUSE-SU-2026:10721-1"],"status":"published","title":"An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a...","description":"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 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hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9","tags":["fix","article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-37459","tags":["vdb-entry","x_refsource_REDHAT","report","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2466513","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37459.json","tags":["x_sadp-csaf-vex","web"]},{"url":"https://access.redhat.com/errata/RHSA-2026:24347","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:24370","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37459","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-hmpg-chwg-jvg8"},{"url":"https://access.redhat.com/security/cve/CVE-2026-37457","tags":["report"]},{"url":"https://bugzilla.redhat.com/2464548","tags":["report"]},{"url":"https://bugzilla.redhat.com/2466513","tags":["report"]},{"url":"https://errata.almalinux.org/10/ALSA-2026-24347.html","tags":["advisory"]},{"url":"https://www.redhat.com/security/data/cve/CVE-2026-37460.html","tags":["report"]},{"url":"https://errata.almalinux.org/9/ALSA-2026-24370.html","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37459.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-37459","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2464548","tags":["report"]},{"url":"https://issues.redhat.com/browse/RHEL-166035","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_24347.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-37457","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37457","tags":["advisory"]},{"url":"https://github.com/FRRouting/frr/commit/0e6882bc72c0278988a47b2f0f73b7a91099a25c","tags":["article"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-37459","tags":["advisory","report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-37460","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2484385","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-37460","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37460","tags":["advisory"]},{"url":"https://github.com/FRRouting/frr","tags":["article"]},{"url":"https://github.com/FRRouting/frr/commit/7676cad65114aa23adde58","tags":["article"]},{"url":"https://github.com/FRRouting/frr/pull/21098%2C","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_24370.json","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2026:24347","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2026:24370","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-37459","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8376-1","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-28532","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-37457","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-37458","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-37459","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-37459","description":"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.","status":"published","published":"2026-05-04T00:00:00Z","modified":"2026-07-15T01:02:29.78Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-400","CWE-191"],"updated_at":"2026-11-02T13:39:16.730222Z"}],"euvd":[{"id":"EUVD-2026-27047","description":"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.","status":"published","published":"2026-05-04T00:00:00Z","modified":"2026-07-15T01:02:29Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:19:56.47701Z"}],"ghsa":[{"id":"GHSA-hmpg-chwg-jvg8","title":"An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a...","description":"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.","status":"published","published":"2026-05-04T18:30:31Z","modified":"2026-06-30T03:37:35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-191","CWE-400"],"updated_at":"2026-11-02T15:09:05.934873Z"}],"nvd":[{"id":"CVE-2026-37459","description":"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.","status":"published","published":"2026-05-04T18:16:28.807Z","modified":"2026-07-15T02:20:44.66Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400","CWE-191"],"updated_at":"2026-11-02T14:12:17.022502Z"}],"osv":[{"id":"CVE-2026-37459","description":"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.","status":"published","published":"2026-05-04T00:00:00Z","modified":"2026-10-28T11:12:17.039033082Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:03.040464Z"},{"id":"DEBIAN-CVE-2026-37459","description":"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.","status":"published","published":"2026-05-04T18:16:28.807Z","modified":"2026-10-01T03:03:10.967254502Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:54.587575Z"},{"id":"RHSA-2026:24347","title":"Red Hat Security Advisory: frr security update","status":"published","published":"2026-06-08T10:06:41Z","modified":"2026-08-04T10:19:43Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.983284Z"},{"id":"RHSA-2026:24370","title":"Red Hat Security Advisory: frr10 security update","status":"published","published":"2026-06-09T10:08:32Z","modified":"2026-06-28T11:54:08Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.983284Z"},{"id":"RLSA-2026:24347","title":"Important: frr security update","description":"FRRouting is free software that manages TCP/IP based routing protocols. It supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD. \n\nSecurity Fix(es):\n\n* frr: denial of service via crafted FlowSpec component (CVE-2026-37457)\n\n* frr: denial of service via crafted BGP UPDATE message (CVE-2026-37459)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-06-11T12:05:12.507415Z","modified":"2026-06-11T12:30:18.259725727Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:25.804165Z"},{"id":"RLSA-2026:24370","title":"Important: frr10 security update","description":"FRRouting is free software that manages TCP/IP based routing protocols. It takes a multi-server and multi-threaded approach to resolve the current complexity of the Internet.  FRRouting supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD.  FRRouting is a fork of Quagga.\n\nSecurity Fix(es):\n\n* frr: denial of service via crafted FlowSpec component (CVE-2026-37457)\n\n* frr: denial of service via crafted BGP UPDATE message (CVE-2026-37459)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-06-11T12:03:24.031456Z","modified":"2026-06-11T12:30:16.779943107Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:25.804165Z"},{"id":"UBUNTU-CVE-2026-37459","description":"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.","status":"published","published":"2026-05-04T18:16:00Z","modified":"2026-06-30T18:17:59.272033651Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:16.686388Z"},{"id":"ALSA-2026:24347","title":"Important: frr security update","description":"FRRouting is free software that manages TCP/IP based routing protocols. It supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD.   \n\nSecurity Fix(es):  \n\n  * frr: denial of service via crafted FlowSpec component (CVE-2026-37457)\n  * frr: denial of service via crafted BGP UPDATE message (CVE-2026-37459)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-06-08T00:00:00Z","modified":"2026-11-06T12:00:04.402161376Z","updated_at":"2026-11-06T12:12:56.168821Z"},{"id":"ALSA-2026:24370","title":"Important: frr10 security update","description":"FRRouting is free software that manages TCP/IP based routing protocols. It takes a multi-server and multi-threaded approach to resolve the current complexity of the Internet. FRRouting supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD. FRRouting is a fork of Quagga.  \n\nSecurity Fix(es):  \n\n  * frr: denial of service via crafted FlowSpec component (CVE-2026-37457)\n  * frr: denial of service via crafted BGP UPDATE message (CVE-2026-37459)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-06-08T00:00:00Z","modified":"2026-10-29T11:32:33.954998202Z","updated_at":"2026-11-02T15:27:54.283654Z"},{"id":"AZL-86217","title":"CVE-2026-37459 affecting package frr for versions less than 10.5.4-1","description":"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.","status":"published","published":"2026-05-04T18:16:28Z","modified":"2026-08-28T17:56:36.833522Z","updated_at":"2026-11-02T15:28:10.677811Z"},{"id":"openSUSE-SU-2026:10721-1","title":"frr-10.6.1-1.1 on GA media","description":"These are all security issues fixed in the frr-10.6.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-05-08T00:00:00Z","modified":"2026-05-09T07:45:48.125228Z","updated_at":"2026-11-02T16:58:38.415593Z"}]}}