CVE-2016-2203

Messaging Gateway vulnerability

CVSS

7.8

EPSS

7.1%

EPSS pct

94th

Exploited

No known

The management console on Symantec Messaging Gateway (SMG) Appliance devices before 10.6.1 allows local users to discover an encrypted AD password by leveraging certain read privileges.

Affected vendor

Symantec

Affected product

Messaging Gateway

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-255

Published

2016-04-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 7.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2016-2203

Confirm whether Symantec Messaging Gateway is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2016-2203.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-2203

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-2203 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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