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

Quick assessment

Affected
ntop nDPI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ntop nDPI 在 6.0 版本之前包含一个堆缓冲区溢出漏洞。该漏洞位于 函数中，该函数会在调用者提供的缓冲区边界之外写入数据。攻击者可通过提供特制的网络数据包数据（包括 TLS SNI、HTTP 请求头或 DNS 名称）来触发此溢出，这些数据若到达存在漏洞的函数，将导致堆内存损坏。

CVSS 7.4 · High
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I. Basic Information for CVE-2026-86098

Vulnerability Information
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Vulnerability Title
ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ntop nDPI 0 ~ 6.0 -

II. Public POCs for CVE-2026-86098

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III. Intelligence Information for CVE-2026-86098

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Patches & Fixes for CVE-2026-86098 (1)

Vendor Advisories for CVE-2026-86098 (1)

Same Patch Batch · ntop · 2026-09-04 · 3 CVEs total

CVE-2026-86091 7.1 HIGH ntopng before 6.7.260717 Missing Authorization on the Host Pool Bulk Delete Handler
CVE-2026-86090 7.1 HIGH ntopng before 6.7.260717 Missing Authorization on the Notification Endpoint and Recipient

IV. Related Vulnerabilities

Same product: nDPI
Same vendor: ntop
Same weakness: CWE-787

V. Comments for CVE-2026-86098

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