Intel

CVE-2026-38968

ntopng: Sicherheitsluecke

criticalEPSS 0.5%

Affected

  • ntop/ntopng between *..6.6

Description

ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.

Source: Microsoft Security Update GuideNVD (NIST)cvelistv5

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

ntopntopng
6.6

Metrics

XIEM Effective CVSS
9.8
Source: nvd-v3
EPSS percentile
44.5 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
—
Show all metrics
Severity
critical
Priority score
86.05
Exploit maturity
no public PoC known
CVSS v3
9.8
EPSS score
0.5 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-07-02 00:00 UTC

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. New CVE Received2026-07-02 21:16 UTC· cve@mitre.org
    • Affected: n/a
    • Description: ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.
    • Reference: https://github.com/ntop/ntopng/commit/14e22497233dc7d31d19dccb74b13bb073d16c2c
    • Reference: https://github.com/ntop/ntopng/commit/179a346ceb6239fd36128ccca3efa8f9ea61eeb5

Linked advisories