CVE-2016-6406 is a critical vulnerability affecting Cisco Email Security Appliance (ESA) devices running specific AsyncOS versions (9.1.2, 9.7.2, 10.0.0) with the Enrollment Client before 1.0.2-065 installed. This flaw allows unauthenticated remote attackers to gain root access by connecting to an exposed testing/debugging interface. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the security community.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
9.1.2-023CPE matchmatch criteria | cpe:2.3:o:cisco:email_security_appliance_firmware:9.1.2-023:*:*:*:*:*:*:* | ||
9.1.2-028CPE matchmatch criteria | cpe:2.3:o:cisco:email_security_appliance_firmware:9.1.2-028:*:*:*:*:*:*:* | ||
9.1.2-036CPE matchmatch criteria | cpe:2.3:o:cisco:email_security_appliance_firmware:9.1.2-036:*:*:*:*:*:*:* | ||
9.7.2-046CPE matchmatch criteria | cpe:2.3:o:cisco:email_security_appliance_firmware:9.7.2-046:*:*:*:*:*:*:* | ||
9.7.2-047CPE matchmatch criteria | cpe:2.3:o:cisco:email_security_appliance_firmware:9.7.2-047:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.