How severe is CVE-2016-0400?

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

Is CVE-2016-0400 known to be exploited?

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

Vulnerability in IBM Websphere Extreme Scale

CVE-2016-0400

CRLF injection vulnerability in IBM WebSphere eXtreme Scale 7.1.0 before 7.1.0.3, 7.1.1 before 7.1.1.1, 8.5 before 8.5.0.3, and 8.6 before 8.6.0.8 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a crafted URL.

Published 2016-07-02 · 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: 0.021 (81.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

IBM Websphere Extreme Scale — versions 7.1.0, 7.1.0.2, 7.1.1

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www-01.ibm.com/support/docview.wss (vendor-advisory)
www-01.ibm.com/support/docview.wss (Patch, Vendor Advisory)
www.exploit-db.com/exploits/40039/ (exploit)
www-01.ibm.com/support/docview.wss (vendor-advisory)

Frequently asked questions

What is CVE-2016-0400?: CVE-2016-0400 is a medium-severity vulnerability in IBM Websphere Extreme Scale. CVSS score: 6.1/10. Published 2016-07-02.
How severe is CVE-2016-0400?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2016-0400 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.