CVE-2026-97371
ntopng: Stack buffer overflow (write) in nDPI custom category detection allows remote code execution via crafted network packets
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-121 |
| Vendor | ntop |
| Product | ntopng |
| Published | Nov 5, 2026 |
| Last Updated | Nov 5, 2026 |
Stay Ahead of the Next One
Get instant alerts for ntop ntopng
Be the first to know when new medium vulnerabilities affecting ntop ntopng are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
ntop / ntopng
< 6.7.260721