Assessment
Why it matters
EPSS is 0.7%; technical severity is CVSS 8.8.
In SecurityCenter versions prior to 5.7.0, a username enumeration issue could allow an unauthenticated attacker to automate the discovery of username aliases via brute force, ultimately facilitating unauthorized access. Server response output has been unified to correct this issue.
Who should care
- Teams operating Security Center
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether Security Center is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Tenable Security patch Tns 2018 11
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Treatment intelligence
Remediation intelligence
Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.
Verification noteAutomated link verification has not completed for this guidance yet.
Technical details
- CVSS vector
- CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- Not classified
- Affected versions
- Tenable Security Center (End Excluding 5.7.0)
- Fixed versions
- Tenable Security Center (Fixed from 5.7.0)
- Published
- 2 August 2018
- Attack vector
- Adjacent
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Latest EPSS score: 0.7%
- Signal calculated at 13