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.
History

Thu, 05 Nov 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Ntop
Ntop ntopng
Vendors & Products Ntop
Ntop ntopng

Thu, 05 Nov 2026 16:30:00 +0000

Type Values Removed Values Added
Description 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.
Title ntopng: Stack buffer overflow (write) in nDPI custom category detection allows remote code execution via crafted network packets
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-11-05T16:06:00.745Z

Updated: 2026-11-05T20:57:38.887Z

Reserved: 2026-09-24T14:16:20.200Z

Link: CVE-2026-97371

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-05T17:18:22.323

Modified: 2026-11-05T21:18:54.760

Link: CVE-2026-97371

cve-icon Redhat

No data.