{"id":"UBUNTU-CVE-2026-97371","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.","modified":"2026-11-07T01:45:09.779927450Z","published":"2026-11-06T00:00:00Z","upstream":["CVE-2026-97371"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-97371"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-97371"},{"type":"REPORT","url":"https://github.com/ntop/ntopng/security/advisories/GHSA-26jm-9qfw-89w7"},{"type":"REPORT","url":"https://github.com/ntop/ntopng/commit/96acb6187950a6a49ca827e49973c3e0c27ea664"}],"affected":[{"package":{"name":"ntopng","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/ntopng?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1+dfsg1-2ubuntu1","2.0+dfsg1-1","2.2+dfsg1-1","2.2+dfsg1-1build1","2.2+dfsg1-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"ntopng","binary_version":"2.2+dfsg1-1ubuntu0.1~esm2"},{"binary_name":"ntopng-data","binary_version":"2.2+dfsg1-1ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97371.json"}},{"package":{"name":"ntopng","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/ntopng?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4+dfsg1-3","2.4+dfsg1-4","3.2+dfsg1-1","3.2+dfsg1-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.2+dfsg1-1ubuntu0.1~esm2","binary_name":"ntopng"},{"binary_version":"3.2+dfsg1-1ubuntu0.1~esm2","binary_name":"ntopng-data"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97371.json"}},{"package":{"name":"ntopng","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ntopng?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.8+dfsg1-2.1build3"],"ecosystem_specific":{"binaries":[{"binary_name":"ntopng","binary_version":"3.8+dfsg1-2.1build3"},{"binary_version":"3.8+dfsg1-2.1build3","binary_name":"ntopng-data"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97371.json"}},{"package":{"name":"ntopng","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ntopng?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.1+dfsg1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ntopng","binary_version":"5.2.1+dfsg1-1"},{"binary_name":"ntopng-data","binary_version":"5.2.1+dfsg1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97371.json"}},{"package":{"name":"ntopng","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/ntopng?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.1+dfsg1-1","5.2.1+dfsg1-1ubuntu1","5.2.1+dfsg1-1ubuntu3","5.2.1+dfsg1-1ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_version":"5.2.1+dfsg1-1ubuntu4","binary_name":"ntopng"},{"binary_version":"5.2.1+dfsg1-1ubuntu4","binary_name":"ntopng-data"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-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"},{"type":"Ubuntu","score":"medium"}]}