CVE-2026-86098

ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape

HIGH
7.4
CVSS Score
Published: September 4, 2026 at 10:38 PM UTC
Updated: September 23, 2026 at 05:30 PM UTC
1 product affected across 1 vendornDPI

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Severity
HIGH7.4
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 6.0
Vendor states this is fixed in 6.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-787

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