{"id":"CVE-2026-86098","aliases":["AZL-99945","DEBIAN-CVE-2026-86098","EUVD-2026-71791","GHSA-c8vx-3h2j-4f8m","UBUNTU-CVE-2026-86098"],"status":"published","title":"ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","severity":{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00592,"percentile":0.48753,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2026-09-04T22:38:48Z","modified":"2026-11-03T05:33:06Z","fixes":[{"ecosystem":"Azure Linux:3","package":"ntopng","fixed_in":["5.2.1-7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"ntopng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.1-7"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2-2","4.2-2.1","4.2-2.1~exp1"]},{"source":"osv","ecosystem":"Debian:13","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2-2.1"]},{"source":"osv","ecosystem":"Debian:14","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2-2.1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.0-1","1.6-1","1.7.1~git20151130.6f3d5a7-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8-1","2.2-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6-4","2.6-5"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0-4","4.2-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2-2","4.2-2.1","4.2-2.1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2-2.1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"ndpi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2-2.1build1","4.2-2.1build2"]}],"products":[{"vendor":"ntop","product":"ndpi"}],"references":[{"url":"https://github.com/ntop/nDPI/commit/94e82c1de12323d992895830231865736a8abf2c","tags":["patch","fix"]},{"url":"https://github.com/ntop/nDPI","tags":["product","package"]},{"url":"https://github.com/ntop/nDPI/blob/5.0/src/lib/ndpi_serializer.c","tags":["technical-description","article"]},{"url":"https://www.vulncheck.com/advisories/ntop-ndpi-before-6.0-heap-buffer-overflow-via-ndpi-json-string-escape","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86098","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-c8vx-3h2j-4f8m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86098.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-86098","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-86098","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-86098","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-86098","title":"ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","status":"published","published":"2026-09-04T22:38:48.064Z","modified":"2026-09-14T19:33:07.375Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T13:49:42.666099Z"}],"euvd":[{"id":"EUVD-2026-71791","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","status":"published","published":"2026-09-04T22:38:48Z","modified":"2026-09-14T19:33:07Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T17:28:19.383429Z"}],"ghsa":[{"id":"GHSA-c8vx-3h2j-4f8m","title":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the...","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","status":"published","published":"2026-09-05T00:31:06Z","modified":"2026-09-05T00:31:11Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high"},{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:11:24.326884Z"}],"nvd":[{"id":"CVE-2026-86098","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","status":"published","published":"2026-09-04T23:18:03.687Z","modified":"2026-09-23T17:17:46.867Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:12:44.082631Z"}],"osv":[{"id":"CVE-2026-86098","title":"ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","status":"published","published":"2026-09-04T22:38:48.064Z","modified":"2026-10-28T11:19:00.216263619Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:45:18.825071Z"},{"id":"DEBIAN-CVE-2026-86098","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","status":"published","published":"2026-09-04T23:18:03.687Z","modified":"2026-09-24T08:47:29.167830022Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:46:05.022702Z"},{"id":"UBUNTU-CVE-2026-86098","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","status":"published","published":"2026-09-04T23:18:00Z","modified":"2026-10-17T13:01:14.038909003Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high"},{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:57:24.828975Z"},{"id":"AZL-99945","title":"CVE-2026-86098 affecting package ntopng for versions less than 5.2.1-7","description":"ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.","status":"published","published":"2026-09-04T23:18:03Z","modified":"2026-11-03T05:33:06Z","updated_at":"2026-11-05T16:41:26.480138Z"}]}}