{"schema_version":1,"title":"CESNET vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 7 vulnerabilities in CESNET: 0 in the last 7 days and 5 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-122130, was published on 4 November 2026. 5 vulnerabilities in the last four weeks, up from none in the four before. 2 technologies have a page of their own.","url":"https://junglewise.ai/threats/vendors/cesnet","json_url":"https://junglewise.ai/threats/vendors/cesnet.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/vendors/cesnet","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","thin":false,"counts":{"high":3,"all_time":7,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":5,"last_90_days":5,"last_365_days":7},"latest":[{"cve":"CVE-2026-122130","cvss":8.2,"slug":"cve-2026-122130-cesnet-ipfixcol2-2-3-0-before-2-9-0-contains-an-integer-overflow","title":"CESNET ipfixcol2 integer overflow in Forwarder plugin","severity":"high","exploited":false,"published_at":"2026-11-04T21:18:08.543+00:00","url":"https://junglewise.ai/threats/cve-2026-122130-cesnet-ipfixcol2-2-3-0-before-2-9-0-contains-an-integer-overflow"},{"cve":"CVE-2026-122129","cvss":5.3,"slug":"cve-2026-122129-cesnet-ipfixcol2-2-7-1-before-2-9-0-contains-a-memory-allocation","title":"CESNET ipfixcol2 memory exhaustion in LZ4 decoder","severity":"medium","exploited":false,"published_at":"2026-11-04T21:18:08.38+00:00","url":"https://junglewise.ai/threats/cve-2026-122129-cesnet-ipfixcol2-2-7-1-before-2-9-0-contains-a-memory-allocation"},{"cve":"CVE-2026-122127","cvss":7.5,"slug":"cve-2026-122127-cesnet-ipfixcol2-2-7-1-before-2-9-0-contains-a-heap-based-buffer","title":"CESNET ipfixcol2 heap buffer overflow in LZ4 decompression","severity":"high","exploited":false,"published_at":"2026-11-04T21:18:08.2+00:00","url":"https://junglewise.ai/threats/cve-2026-122127-cesnet-ipfixcol2-2-7-1-before-2-9-0-contains-a-heap-based-buffer"},{"cve":"CVE-2026-63201","slug":"cve-2026-63201-netopeer2-is-a-server-for-implementing-network-configuration","title":"Netopeer2 format string vulnerability in RPC handling","severity":"info","exploited":false,"published_at":"2026-10-30T22:16:58.637+00:00","url":"https://junglewise.ai/threats/cve-2026-63201-netopeer2-is-a-server-for-implementing-network-configuration"},{"cve":"CVE-2026-115327","cvss":5.3,"slug":"cve-2026-115327-libyang-through-6-4-13-contains-an-uninitialized-pointer-free","title":"libyang uninitialized pointer free in NETCONF RPC parsing","severity":"medium","exploited":false,"published_at":"2026-10-22T11:17:51.73+00:00","url":"https://junglewise.ai/threats/cve-2026-115327-libyang-through-6-4-13-contains-an-uninitialized-pointer-free"},{"cve":"CVE-2026-41401","cvss":6.5,"slug":"cve-2026-41401-cesnet-libyang-heap-use-after-free-in-lyd-parser-set-data-flags","title":"CESNET libyang heap use-after-free in lyd_parser_set_data_flags","severity":"medium","exploited":false,"published_at":"2026-05-26T15:16:35.66+00:00","url":"https://junglewise.ai/threats/cve-2026-41401-cesnet-libyang-heap-use-after-free-in-lyd-parser-set-data-flags"},{"cve":"CVE-2026-44673","cvss":7.5,"epss":0.0027,"slug":"cve-2026-44673-cesnet-libyang-heap-buffer-overflow-in-lyb-read-string","title":"CESNET libyang heap buffer overflow in lyb_read_string","severity":"high","exploited":false,"published_at":"2026-05-14T21:16:47.5+00:00","url":"https://junglewise.ai/threats/cve-2026-44673-cesnet-libyang-heap-buffer-overflow-in-lyb-read-string"}],"vendor":{"hub":true,"name":"CESNET","slug":"cesnet","homepage":"https://www.cesnet.cz/","description":"Czech academic and research network organization providing networking and IT services.","url":"https://junglewise.ai/threats/vendors/cesnet"},"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":3},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"most_severe":[{"cve":"CVE-2026-122130","cvss":8.2,"slug":"cve-2026-122130-cesnet-ipfixcol2-2-3-0-before-2-9-0-contains-an-integer-overflow","title":"CESNET ipfixcol2 integer overflow in Forwarder plugin","severity":"high","exploited":false,"published_at":"2026-11-04T21:18:08.543+00:00","url":"https://junglewise.ai/threats/cve-2026-122130-cesnet-ipfixcol2-2-3-0-before-2-9-0-contains-an-integer-overflow"},{"cve":"CVE-2026-44673","cvss":7.5,"epss":0.0027,"slug":"cve-2026-44673-cesnet-libyang-heap-buffer-overflow-in-lyb-read-string","title":"CESNET libyang heap buffer overflow in lyb_read_string","severity":"high","exploited":false,"published_at":"2026-05-14T21:16:47.5+00:00","url":"https://junglewise.ai/threats/cve-2026-44673-cesnet-libyang-heap-buffer-overflow-in-lyb-read-string"},{"cve":"CVE-2026-122127","cvss":7.5,"slug":"cve-2026-122127-cesnet-ipfixcol2-2-7-1-before-2-9-0-contains-a-heap-based-buffer","title":"CESNET ipfixcol2 heap buffer overflow in LZ4 decompression","severity":"high","exploited":false,"published_at":"2026-11-04T21:18:08.2+00:00","url":"https://junglewise.ai/threats/cve-2026-122127-cesnet-ipfixcol2-2-7-1-before-2-9-0-contains-a-heap-based-buffer"},{"cve":"CVE-2026-41401","cvss":6.5,"slug":"cve-2026-41401-cesnet-libyang-heap-use-after-free-in-lyd-parser-set-data-flags","title":"CESNET libyang heap use-after-free in lyd_parser_set_data_flags","severity":"medium","exploited":false,"published_at":"2026-05-26T15:16:35.66+00:00","url":"https://junglewise.ai/threats/cve-2026-41401-cesnet-libyang-heap-use-after-free-in-lyd-parser-set-data-flags"},{"cve":"CVE-2026-122129","cvss":5.3,"slug":"cve-2026-122129-cesnet-ipfixcol2-2-7-1-before-2-9-0-contains-a-memory-allocation","title":"CESNET ipfixcol2 memory exhaustion in LZ4 decoder","severity":"medium","exploited":false,"published_at":"2026-11-04T21:18:08.38+00:00","url":"https://junglewise.ai/threats/cve-2026-122129-cesnet-ipfixcol2-2-7-1-before-2-9-0-contains-a-memory-allocation"},{"cve":"CVE-2026-115327","cvss":5.3,"slug":"cve-2026-115327-libyang-through-6-4-13-contains-an-uninitialized-pointer-free","title":"libyang uninitialized pointer free in NETCONF RPC parsing","severity":"medium","exploited":false,"published_at":"2026-10-22T11:17:51.73+00:00","url":"https://junglewise.ai/threats/cve-2026-115327-libyang-through-6-4-13-contains-an-uninitialized-pointer-free"},{"cve":"CVE-2026-63201","slug":"cve-2026-63201-netopeer2-is-a-server-for-implementing-network-configuration","title":"Netopeer2 format string vulnerability in RPC handling","severity":"info","exploited":false,"published_at":"2026-10-30T22:16:58.637+00:00","url":"https://junglewise.ai/threats/cve-2026-63201-netopeer2-is-a-server-for-implementing-network-configuration"}],"generated_at":"2026-11-12T03:07:00.164048+00:00","technologies":[{"name":"CESNET Ipfixcol2","slug":"ipfixcol2","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/ipfixcol2"},{"name":"CESNET Libyang","slug":"libyang","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/libyang"}]}