CVE-2026-84990Public exploitNetwork attack vector

Credential disclosure via ungated backup endpoints

Published Sep 21, 2026 · Updated Sep 21, 2026

Missing authorization in ntopng before 6.7.260718 allows remote authenticated users to download system backups containing credentials. The two REST backup endpoints call backup_config functions without an administrator check, and the export serializes ntopng.user.* Redis keys. Any logged-in non-admin account can obtain password hashes and configured API tokens, TOTP secrets, or WebAuthn data, enabling account compromise.

CVSS severity8.8
High
EPSS probability0.33%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Missing authorization in ntopng before 6.7.260718 allows remote authenticated users to download system backups containing credentials. The two REST backup endpoints call backup_config functions without an administrator check, and the export serializes ntopng.user.* Redis keys. Any logged-in non-admin account can obtain password hashes and configured API tokens, TOTP secrets, or WebAuthn data, enabling account compromise.

The record

CVE
CVE-2026-84990
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
ntop
Product
ntopng
Classifications
CWE-862, CWE-200, T1555
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 6.7.260718

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ntop · ntopngversion=< 6.7.260718

Published CVSS scores

8.8GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1555Credentials from Password Stores

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started