CVE-2018-15460: high-severity vulnerability in Cisco Email Security Appliance (ESA)
Cisco Email Security Appliance URL Filtering Denial of Service Vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 2.5%
A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to cause the CPU utilization to increase to 100 percent, causing a denial of service (DoS) condition on an affected device. The vulnerability is due to improper filtering of email messages that contain references to whitelisted URLs. An attacker could exploit this vulnerability by sending a malicious email message that contains a large number of whitelisted URLs. A successful exploit could allow the attacker to cause a sustained DoS condition that could force the affected device to stop scanning and forwarding email messages.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected products
Cisco · Cisco Email Security Appliance (ESA)Related CVEs — Cisco Email Security Appliance (ESA)
In the same product, most dangerous first.
CVE-2018-15453HIGHCisco Email Security Appliance Memory Corruption Denial of Service VulnerabilityEPSS 2.3%CVE-2018-0447—Cisco Email Security Appliance URL Filtering Bypass VulnerabilityEPSS 2.3%CVE-2019-1947HIGHCisco Email Security Appliance Denial of Service VulnerabilityEPSS 1.9%CVE-2019-1983HIGHCisco Email Security Appliance and Cisco Content Security Management Appliance Denial of Service VulnerabilityEPSS 1.9%CVE-2022-20653HIGHCisco Email Security Appliance DNS Verification Denial of Service VulnerabilityEPSS 1.8%CVE-2019-1844MEDIUMCisco Email Security Appliance Filter Bypass VulnerabilityEPSS 1.7%