High 7.4Published Sep 4, 2026

CVE-2026-86098ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects ntop nDPI. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for ntop nDPI

Exploited in the last 30 days

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.

CVSS: 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Sep 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ntop nDPI ntop:ndpi (from the name)	before 6.0; 6.0 not affected	CNA record

References

https://github.com/ntop/nDPI/commit/94e82c1de12323d992895830231865736a8abf2cpatch
https://github.com/ntop/nDPIproduct
https://github.com/ntop/nDPI/blob/5.0/src/lib/ndpi_serializer.ctechnical-description
https://www.vulncheck.com/advisories/ntop-ndpi-before-6.0-heap-buffer-overflow-via-ndpi-json-string-escapethird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.