CVE-2018-0410
Description
Unauthenticated remote attacker can exhaust system memory on Cisco Web Security Appliances by establishing many TCP connections, causing denial of service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Unauthenticated remote attacker can exhaust system memory on Cisco Web Security Appliances by establishing many TCP connections, causing denial of service.
Vulnerability
The vulnerability exists in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances. It is due to improper management of memory resources for TCP connections. An unauthenticated, remote attacker can exploit this by sending a high volume of TCP connections to the data interface of an affected device via IPv4 or IPv6. This affects all versions prior to fixed releases. [1]
Exploitation
An attacker needs network access to the data interface of the affected device. No authentication is required. The attacker establishes a high number of TCP connections, exhausting system memory.
Impact
Successful exploitation causes system memory exhaustion, leading to a denial of service condition where the system stops processing new connections. Recovery may require manual intervention.
Mitigation
Cisco has released free software updates to address this vulnerability. Customers should upgrade to the fixed versions as indicated in Cisco Security Advisory cisco-sa-20180815-wsa-dos [1]. No workaround is available.
AI Insight generated on May 25, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Range: unspecified
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-dosmitrevendor-advisoryx_refsource_CISCO
- www.securityfocus.com/bid/105098mitrevdb-entryx_refsource_BID
- www.securitytracker.com/id/1041535mitrevdb-entryx_refsource_SECTRACK
News mentions
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