{"id":"CVE-2026-97371","summary":"ntopng: Stack buffer overflow (write) in nDPI custom category detection allows remote code execution via crafted network packets","details":"ntopng is a web-based network traffic monitoring application. Prior to 6.7.260721, ndpi_get_custom_category_match writes a four-byte nDPI protocol-category value through a pointer to the two-byte id variable in IpAddress::reloadBlacklist in src/IpAddress.cpp during packet dissection and host initialization. A remote unauthenticated attacker on a monitored network segment can send packets that match custom-category rules, causing stack corruption and denial of service without user interaction. This issue is fixed in version 6.7.260721.","aliases":["GHSA-26jm-9qfw-89w7"],"modified":"2026-11-05T21:32:27.877915087Z","published":"2026-11-05T16:06:00.745Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-121"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97371.json","unresolved_ranges":[{"extracted_events":[{"strategy":"StringRangeExpression","range":[{"fixed":"6.7.260721"}],"source":"AFFECTED_FIELD"}]},{"extracted_events":[{"range":[{"fixed":"6.7.260721"},{"fixed":"6.7.260721"}],"source":"DESCRIPTION"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97371.json"},{"type":"FIX","url":"https://github.com/ntop/ntopng/commit/96acb6187950a6a49ca827e49973c3e0c27ea664"},{"type":"ADVISORY","url":"https://github.com/ntop/ntopng/security/advisories/GHSA-26jm-9qfw-89w7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97371"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ntop/ntopng","events":[{"introduced":"0"},{"fixed":"96acb6187950a6a49ca827e49973c3e0c27ea664"}],"database_specific":{"extracted_events":[{"source":"REFERENCES_COMMIT","range":[{"fixed":"96acb6187950a6a49ca827e49973c3e0c27ea664"}]}]}}],"versions":["3.0","2.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97371.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}