CVE catalog

CVE-2026-86098

Severity: High · CVSS 8.3CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: Sep 4, 2026, 11:18:03 PM UTC
Updated: Sep 4, 2026, 11:18:03 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.59% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	ndpi	sid	`4.2-2.1`	vulnerable
Debian	ndpi	forky	`4.2-2.1`	vulnerable
Debian	ndpi	trixie	`4.2-2.1`	vulnerable
Debian	ndpi	bookworm	`4.2-2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	ndpi	source	sid	`(unfixed)`	not yet assigned	Not reported	[1146882]
Debian	ndpi	source	forky	`(unfixed)`	not yet assigned	Not reported	[1146882]
Debian	ndpi	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1146882]
Debian	ndpi	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1146882]

[Debian bug #1146882]

Notes

[trixie] ndpi: Minor issue [bookworm] ndpi: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libndpi4.2]Affected
Source package: [ndpi]
Details (2)
- 4.2-2 · amd64 · bookworm
  Affected
  nvd · ndpi · debian · bookworm; nvd · ndpi · debian · 12
- 4.2-2 · arm64 · bookworm
  Affected
  nvd · ndpi · debian · bookworm; nvd · ndpi · debian · 12
[libndpi-bin]Affected
Source package: [ndpi]
Details (2)
- 4.2-2 · amd64 · bookworm
  Affected
  nvd · ndpi · debian · bookworm; nvd · ndpi · debian · 12
- 4.2-2 · arm64 · bookworm
  Affected
  nvd · ndpi · debian · bookworm; nvd · ndpi · debian · 12
[libndpi-dev]Affected
Source package: [ndpi]
Details (2)
- 4.2-2 · amd64 · bookworm
  Affected
  nvd · ndpi · debian · bookworm; nvd · ndpi · debian · 12
- 4.2-2 · arm64 · bookworm
  Affected
  nvd · ndpi · debian · bookworm; nvd · ndpi · debian · 12
[libndpi-wireshark]Affected
Source package: [ndpi]
Details (2)
- 4.2-2 · amd64 · bookworm
  Affected
  nvd · ndpi · debian · bookworm; nvd · ndpi · debian · 12
- 4.2-2 · arm64 · bookworm
  Affected
  nvd · ndpi · debian · bookworm; nvd · ndpi · debian · 12

[Debian 13 (Trixie)]

[libndpi4.2t64]Affected
Source package: [ndpi]
Details (2)
- 4.2-2.1+b3 · amd64 · trixie
  Affected
  nvd · ndpi · debian · 13
- 4.2-2.1+b3 · arm64 · trixie
  Affected
  nvd · ndpi · debian · 13
[libndpi-bin]Affected
Source package: [ndpi]
Details (2)
- 4.2-2.1+b3 · amd64 · trixie
  Affected
  nvd · ndpi · debian · 13
- 4.2-2.1+b3 · arm64 · trixie
  Affected
  nvd · ndpi · debian · 13
[libndpi-dev]Affected
Source package: [ndpi]
Details (2)
- 4.2-2.1+b3 · amd64 · trixie
  Affected
  nvd · ndpi · debian · 13
- 4.2-2.1+b3 · arm64 · trixie
  Affected
  nvd · ndpi · debian · 13
[libndpi-wireshark]Affected
Source package: [ndpi]
Details (2)
- 4.2-2.1+b3 · amd64 · trixie
  Affected
  nvd · ndpi · debian · 13
- 4.2-2.1+b3 · arm64 · trixie
  Affected
  nvd · ndpi · debian · 13

Observed: Oct 23, 2026, 9:29:13 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]