What is CVE-2018-1148?

CVE-2018-1148 is a medium-severity vulnerability in Tenable Nessus, classified under Session Fixation. CVSS score: 6.5/10. Published 2018-05-18.

How severe is CVE-2018-1148?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Tenable Nessus

CVE-2018-1148

In Nessus before 7.1.0, Session Fixation exists due to insufficient session management within the application. An authenticated attacker could maintain system access due to session fixation after a user password change.

Published 2018-05-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.007 · change: -0.000

Affected products

Tenable Nessus
Tenable Nessus — versions All versions prior to 7.1.0

Weakness classification (CWE)

CWE-384 — Session Fixation

References

www.tenable.com/security/tns-2018-05 (Vendor Advisory)
www.securitytracker.com/id/1040918 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-1148?: CVE-2018-1148 is a medium-severity vulnerability in Tenable Nessus, classified under Session Fixation. CVSS score: 6.5/10. Published 2018-05-18.
How severe is CVE-2018-1148?: Medium severity. CVSS v3 base score is 6.5 out of 10.