How severe is CVE-2016-8583?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2016-8583 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Alienvault Open Source Security Information And Event Management

CVE-2016-8583

Multiple GET parameters in the vulnerability scan scheduler of AlienVault OSSIM and USM before 5.3.2 are vulnerable to reflected XSS.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2016-10-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

Farrhouq/Inpt-report

References

www.alienvault.com/forums/discussion/7766/security-advisory-alienvault-5-3-2-ad… (Vendor Advisory)
www.securityfocus.com/bid/93863 (vdb-entry)

Frequently asked questions

What is CVE-2016-8583?: CVE-2016-8583 is a medium-severity vulnerability in Alienvault Open Source Security Information And Event Management, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-10-28.
How severe is CVE-2016-8583?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2016-8583 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.