What is CVE-2016-0903?

CVE-2016-0903 is a critical-severity vulnerability in EMC Avamar Server, classified under Information Disclosure. CVSS score: 9.1/10. Published 2016-09-21.

How severe is CVE-2016-0903?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2016-0903 known to be exploited?

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

Information disclosure in EMC Avamar Server

CVE-2016-0903

Avamar Data Store (ADS) and Avamar Virtual Edition (AVE) in EMC Avamar Server before 7.3.0-233 rely on client-side authentication, which allows remote attackers to spoof clients and read backup data via a modified client agent.

Vulnerability class: Information Disclosure

Published 2016-09-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.034 (88.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000

Affected products

EMC Avamar Server

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

seclists.org/bugtraq/2016/Sep/31 (mailing-list, VDB Entry, Third Party Advisory)
www.securityfocus.com/bid/93026 (vdb-entry)
www.securitytracker.com/id/1036844 (vdb-entry)

Frequently asked questions

What is CVE-2016-0903?: CVE-2016-0903 is a critical-severity vulnerability in EMC Avamar Server, classified under Information Disclosure. CVSS score: 9.1/10. Published 2016-09-21.
How severe is CVE-2016-0903?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2016-0903 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.