CVE-2026-86098: Out-of-bounds Write in ntop nDPI
Description
ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function. This flaw allows an out-of-bounds write beyond the buffer boundaries when processing crafted network packet data such as TLS SNI, HTTP headers, or DNS names. The vulnerability can lead to heap corruption and potentially impact the affected system's stability or security.
CVSS v4.0
Score 8.3high
Affected software
ntop
nDPI
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86098 is a heap buffer overflow vulnerability in ntop nDPI's ndpi_json_string_escape function affecting versions prior to 6.0. The vulnerability arises from an out-of-bounds write caused by improper handling of caller-supplied buffer boundaries. Attackers can exploit this by sending specially crafted network packets containing TLS SNI, HTTP headers, or DNS names that trigger the vulnerable function, resulting in heap corruption.
Potential Impact
Successful exploitation of this vulnerability may cause heap corruption, which can lead to application crashes or potentially enable further attacks such as code execution or denial of service. The CVSS 4.0 score is 8.3, indicating a high severity with network attack vector, high attack complexity, and no privileges or user interaction required.
Mitigation Recommendations
No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted network traffic with affected versions or apply any vendor-recommended mitigations once published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-04T22:17:37.991Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9b4bc3acd9273b49619ddb
Added to database: 09/04/2026, 22:52:51 UTC
Last enriched: 10/17/2026, 23:25:35 UTC
Last updated: 10/18/2026, 06:48:20 UTC
Views: 100
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