CVE-2026-86098

EUVD-2026-71791
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.4 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 28.2%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
ntopndpi
𝑥
< 6.0
CNA
Debian logo
Debian Releases
Debian Product
Codename
ndpi
bookworm
vulnerable
forky
vulnerable
sid
vulnerable
trixie
vulnerable
Common Weakness Enumeration
References
https://github.com/ntop/nDPI
https://github.com/ntop/nDPI/blob/5.0/src/lib/ndpi_serializer.c
https://github.com/ntop/nDPI/commit/94e82c1de12323d992895830231865736a8abf2c
https://www.vulncheck.com/advisories/ntop-ndpi-before-6.0-heap-buffer-overflow-via-ndpi-json-string-escape