Security restrictions bypass in Cisco Email Security Appliance

Published: 2018-02-08
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-0140
Exploitation vector Network
Public exploit N/A
Vulnerable software
Cisco Email Security Appliance
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU10421

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0140

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No


The vulnerability allows a remote authenticated attacker to bypass security restrictions on the target system.

The weakness exists in the spam quarantine due to a lack of verification of authenticated user accounts. A remote attacker can modify browser strings to see and download messages submitted by other users to the spam quarantine within their company.


Update to version 11.1.0-069.

Vulnerable software versions

Cisco Email Security Appliance: 9.8.0 112 - 11.0.0 274

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.