CVE-2026-86098
ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | ntop |
| Product | ndpi |
| Published | Sep 4, 2026 |
| Last Updated | Sep 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
ntop / nDPI
0 < 6.0
References
github.com: https://github.com/ntop/nDPI/commit/94e82c1de12323d992895830231865736a8abf2c github.com: https://github.com/ntop/nDPI github.com: https://github.com/ntop/nDPI/blob/5.0/src/lib/ndpi_serializer.c vulncheck.com: https://www.vulncheck.com/advisories/ntop-ndpi-before-6.0-heap-buffer-overflow-via-ndpi-json-string-escape
Credits
Tristan Madani