{"id":"CVE-2026-93424","aliases":[],"cve":{"records":[{"id":"CVE-2026-93424","source":"GitHub_M","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-17T20:57:18.985Z","published":"2026-11-05T22:31:58.734Z","modified":"2026-11-10T19:34:11.761Z"}],"publishers":[{"name":"GitHub_M","role":"CNA","organizationId":"a0819718-46f1-4df5-94e2-005712e83aaa","modified":"2026-11-05T22:31:58.734Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-10T19:34:11.761Z"}],"references":[{"url":"https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-ph88-95vc-x6gv","tags":["x_refsource_CONFIRM"],"source":"GitHub_M"},{"url":"https://github.com/pavel-odintsov/fastnetmon/commit/a24e528d145b5371a7ab0bcdde23e4b4b99506e9","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-ph88-95vc-x6gv","tags":["exploit"],"source":"CISA-ADP"}],"weaknesses":[{"id":"CWE-416","description":"CWE-416: Use After Free","source":"GitHub_M"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-10T19:33:41.834529Z","decisions":[{"name":"Exploitation","value":"poc"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"FastNetMon: NetFlow/IPFIX template cache returns unlocked pointers, causing heap-use-after-free on multi-port deployments","titleSource":"GitHub_M","descriptionSource":"GitHub_M","description":"FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, peer_find_template() in src/netflow_plugin/netflow_collector.cpp and src/netflow_plugin/netflow_v9_collector.cpp returns a pointer into global_netflow9_templates after releasing the cache mutex. On deployments with at least two entries in netflow_ports, concurrent template redefinition and data-flowset processing can let add_update_peer_template() reassign the template and free its records vector while another listener dereferences the escaped pointer. An unauthenticated sender that can reach both NetFlow/IPFIX listener ports can trigger a heap-use-after-free and reliably crash FastNetMon. No fixed release is available as of this review.","score":7.5,"severity":"high","published":"2026-11-05T22:31:58.734Z","modified":"2026-11-10T19:34:11.761Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"pavel-odintsov","name":"fastnetmon","platforms":[],"versions":[{"version":"<= 1.2.9","status":"affected"}],"cpes":[],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-93424"}],"remediation":[],"references":["https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-ph88-95vc-x6gv","https://github.com/pavel-odintsov/fastnetmon/commit/a24e528d145b5371a7ab0bcdde23e4b4b99506e9"],"sources":[{"name":"CVE","id":"CVE-2026-93424","modified":"2026-11-10T19:34:11.761Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93424"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}],"sourceAffected":[],"observedAt":"2026-11-10T19:49:47.731Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T22:40:32.870Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-06T00:40:35.474Z","attemptedAt":"2026-11-06T00:40:35.474Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-06T00:40:35.066Z","attemptedAt":"2026-11-06T00:40:35.066Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-06T00:40:35.131Z","attemptedAt":"2026-11-06T00:40:35.131Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-06T00:40:34.343Z","attemptedAt":"2026-11-06T00:40:34.343Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-117870","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117870","modified":"Nov 5, 2026, 10:31:58 PM","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-06T00:40:35.131Z"},{"source":"NVD","id":"CVE-2026-93424","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93424","modified":"2026-11-05T23:17:02.950","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-06T00:40:35.474Z"}],"aiSummary":{"text":"FastNetMon versions 1.2.9 and earlier have a heap-use-after-free weakness, allowing an unauthenticated sender to crash the system. This occurs when the NetFlow/IPFIX template cache returns unlocked pointers on multi-port deployments. An attacker must reach both listener ports.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-05T23:56:31.818Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-93424"}]}}