CVE-2016-2204

The management console on Symantec Messaging Gateway (SMG) Appliance devices before 10.6.1 allows local users to obtain root-shell access via crafted terminal-window input.

Published: 2016-04-22 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-2204 is rated Moderate Risk (49.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.67%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-2204

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.24% 0.67% +0.43%
2 2025-03-30 0.39% 0.24% -0.15%
3 2025-03-29 — 0.39% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-2204

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.2 3.0 HIGH
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.5 6.0 [email protected]
6.5 2.0 MEDIUM
AV:L/AC:L/Au:M/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:M)
Multiple authentications are required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 2.5 10.0 [email protected]

Weakness enumeration for CVE-2016-2204

Affected software / configurations for CVE-2016-2204

Vendor Product Version Raw CPE
symantec messaging_gateway <= 10.6.0 cpe:2.3:a:symantec:messaging_gateway:*:7:*:*:*:*:*:*
symantec messaging_gateway 10.6.0 cpe:2.3:a:symantec:messaging_gateway:10.6.0:1:*:*:*:*:*:*
symantec messaging_gateway 10.6.0 cpe:2.3:a:symantec:messaging_gateway:10.6.0:2:*:*:*:*:*:*
symantec messaging_gateway 10.6.0 cpe:2.3:a:symantec:messaging_gateway:10.6.0:3:*:*:*:*:*:*
symantec messaging_gateway 10.6.0 cpe:2.3:a:symantec:messaging_gateway:10.6.0:4:*:*:*:*:*:*
symantec messaging_gateway 10.6.0 cpe:2.3:a:symantec:messaging_gateway:10.6.0:5:*:*:*:*:*:*
symantec messaging_gateway 10.6.0 cpe:2.3:a:symantec:messaging_gateway:10.6.0:6:*:*:*:*:*:*

References for CVE-2016-2204

cvelogic Threat Intelligence