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8.6highHigh

CVE-2018-15388

Cisco Adaptive Security Appliance Software

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.

Exploitation status

  • A vendor advisory or patch reference has been published.

What the metrics mean

  • It is reachable over a network, without needing local access.
  • For an attacker who can reach it, no special conditions are needed to exploit it.
  • To exploit it, no account is needed.
  • Beyond that, no action by a user is required.

Scoring

CVSS
8.6 (v3.0)
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness
CWE-400
Assigned by
psirt@cisco.com

Dates

Published
2019-05-03
Last modified
2026-08-11
Sources
NVD

Affected products

  • Cisco Adaptive Security Appliance Software- 9.4.4.34, 9.5 - 9.6.4.25, 9.7 - 9.8.4, 9.9 - 9.9.2.50
  • Cisco Asa 5505all versions
  • Cisco Asa 5510all versions
  • Cisco Asa 5512-Xall versions
  • Cisco Asa 5515-Xall versions
  • Cisco Asa 5520all versions
  • Cisco Asa 5525-Xall versions
  • Cisco Asa 5540all versions
  • Cisco Asa 5545-Xall versions
  • Cisco Asa 5550all versions
  • Cisco Asa 5555-Xall versions
  • Cisco Asa 5580all versions

As listed in the NVD configuration data. Not a statement about your estate.

References