CVE-2021-1534
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS
Percentile
48.0%
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. This vulnerability is due to improper processing of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for an affected device, which could allow malicious URLs to pass through the device.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| cisco | asyncos | * | cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* |
| cisco | email_security_appliance_c170 | - | cpe:2.3:h:cisco:email_security_appliance_c170:-:*:*:*:*:*:*:* |
| cisco | email_security_appliance_c190 | - | cpe:2.3:h:cisco:email_security_appliance_c190:-:*:*:*:*:*:*:* |
| cisco | email_security_appliance_c380 | - | cpe:2.3:h:cisco:email_security_appliance_c380:-:*:*:*:*:*:*:* |
| cisco | email_security_appliance_c390 | - | cpe:2.3:h:cisco:email_security_appliance_c390:-:*:*:*:*:*:*:* |
| cisco | email_security_appliance_c680 | - | cpe:2.3:h:cisco:email_security_appliance_c680:-:*:*:*:*:*:*:* |
| cisco | email_security_appliance_c690 | - | cpe:2.3:h:cisco:email_security_appliance_c690:-:*:*:*:*:*:*:* |
| cisco | email_security_appliance_c690x | - | cpe:2.3:h:cisco:email_security_appliance_c690x:-:*:*:*:*:*:*:* |
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS
Percentile
48.0%