CVE-2016-6406

Email Security Appliance Firmware vulnerability

CVSS

9.8

EPSS

3.6%

EPSS pct

88th

Exploited

No known

Cisco IronPort AsyncOS 9.1.2-023, 9.1.2-028, 9.1.2-036, 9.7.2-046, 9.7.2-047, 9.7.2-054, 10.0.0-124, and 10.0.0-125 on Email Security Appliance (ESA) devices, when Enrollment Client before 1.0.2-065 is installed, allows remote attackers to obtain root access via a connection to the testing/debugging interface, aka Bug ID CSCvb26017.

Affected vendor

Cisco

Affected product

Email Security Appliance Firmware

CVSS vector

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

Weakness type (CWE)

CWE-264 — Permissions, Privileges, and Access Controls

Published

2016-09-22

Risk analysis

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

Its EPSS score of 3.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2016-6406

Confirm whether Cisco Email Security Appliance Firmware is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2016-6406.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-6406

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-6406 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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