ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session ...

Summary

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. Published in July 2026 Security Updates.

Why it matters

Microsoft published this item through its Security Update Guide, making it part of Patch Tuesday triage for affected Windows, cloud, or application estates. EPSS percentile: 30%.

Operator check

Review the Microsoft Security Update Guide entry for CVE-2026-38968. Confirm whether Mariner is deployed, then apply the current security update or documented mitigation. CVSS score: 9.8. EPSS probability: 0.4%; percentile: 30%.

Sources