Information disclosure in Cisco Email Security Appliance and Content Security Management Appliance

Published: 2021-03-03
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-1425
Exploitation vector Network
Public exploit N/A
Vulnerable software
Cisco AsyncOS for Cisco Email Security Appliance
Server applications / IDS/IPS systems, Firewalls and proxy servers

Cisco Content Security Management Appliance
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Cisco Systems, Inc

Security Advisory

This security advisory describes one low risk vulnerability.

1) Information disclosure

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1425

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No


The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists in the web-based management interface of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) and Cisco Content Security Management Appliance (SMA)  due to confidential information is being included in HTTP requests that are exchanged between the user and the device. A remote authenticated user can gain unauthorized access to sensitive information on the system.


Install updates from vendor's website.

Vulnerable software versions

Cisco AsyncOS for Cisco Email Security Appliance: 12.0, 12.1, 12.1-089, 12.1.0-085, 12.5, 12.5.0-059, 12.5.0-066, 12.5.0-633, 12.5.1, 12.5.1-037, 13.0, 13.0.0-375, 13.0.0-392, 13.5.0, 13.5.1, 13.5.1-277, 13.5.2, 13.5.2-036, 13.6.2-066

Cisco Content Security Management Appliance: 13.0.0-187, 13.6.0, 13.6.1-193, 13.7.0

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.