Is CVE-2018-0410 being actively exploited?

CVE-2018-0410 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2018-0410?

CVE-2018-0410 has a CVSS 3.0 base score of 8.6 (HIGH).

CVE-2018-0410

HIGH · CVSS 8.6EPSS 4.1%EU EUVD

A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. An attacker could exploit this vulnerability by establishing a high number of TCP connections to the data interface of an affected device via IPv4 or IPv6. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and result in a DoS condition. System recovery may require manual intervention. Cisco Bug IDs: CSCvf36610.

Key facts

CVSS score: 8.6 (v3.0)
Severity: HIGH
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness (CWE): CWE-400
EPSS score: 4.1% (91th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2018-1233)
Published: August 15, 2018
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2018-1233 in the EU Vulnerability Database. Last updated in EUVD on November 26, 2024.

View on the EU Vulnerability Database

Affected products

cisco / web security appliance
cisco / web security appliance
cisco / web security appliance
cisco / web security appliance
cisco / web security appliance
cisco / web security appliance
cisco / web security appliance
cisco / web security appliance
cisco / web security appliance
cisco / web security appliance

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Cisco Web Security Appliance 10.5 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10799-2017 - archived

References

http://www.securityfocus.com/bid/105098(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1041535(Third Party Advisory, VDB Entry)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-dos(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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