Skip to content
fr Sign in
8.6 High

CVE-2018-15388 A vulnerability in the WebVPN login process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower…

Description

A vulnerability in the WebVPN login process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause increased CPU utilization on an affected device. The vulnerability is due to excessive processing load for existing WebVPN login operations. An attacker could exploit this vulnerability by sending multiple WebVPN login requests to the device. A successful exploit could allow the attacker to increase CPU load on the device, resulting in a denial of service (DoS) condition.

Affected products and versions

Product Affected versions Fixed in
Cisco Adaptive Security Appliance (ASA) Software 9.9 earliest → < 9.9.2.50 9.9.2.50
Cisco Adaptive Security Appliance (ASA) Software 9.8 earliest → < 9.8.4 9.8.4
Cisco Adaptive Security Appliance (ASA) Software 9.6 earliest → < 9.6.4.25 9.6.4.25
Cisco Adaptive Security Appliance (ASA) Software 9.4 earliest → < 9.4.4.34 9.4.4.34

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Cisco Adaptive Security Appliance (ASA) Software

The 161 CVEs of Cisco Adaptive Security Appliance (ASA) Software →
CVE-2025-20363 A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure… 9.0 Critical CVE-2025-20254 A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco Secure Firewall Adaptive Security… 5.8 Medium CVE-2025-20263 A vulnerability in the web services interface of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and… 8.6 High CVE-2025-20253 A vulnerability in the IKEv2 feature of Cisco IOS Software, IOS XE Software, Secure Firewall ASA Software, and Secure… 8.6 High
Track this CVE