CVE-2019-12656
HIGHCisco IOS - Unauthenticated Denial of Service via TLS Packet Handling
Title source: llmDescription
A vulnerability in the IOx application environment of multiple Cisco platforms could allow an unauthenticated, remote attacker to cause the IOx web server to stop processing HTTPS requests, resulting in a denial of service (DoS) condition. The vulnerability is due to a Transport Layer Security (TLS) implementation issue. An attacker could exploit this vulnerability by sending crafted TLS packets to the IOx web server on an affected device. A successful exploit could allow the attacker to cause the IOx web server to stop processing HTTPS requests, resulting in a DoS condition.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-iox
Scores
CVSS v3
7.5
EPSS
0.0182
EPSS Percentile
76.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (7)
cisco/cgr_1000_firmware
cisco/ic3000_firmware
cisco/ie_4000_firmware
cisco/industrial_ethernet_2000_series_firmware
15.2\(6\)e
cisco/ios
1.6.0.0
cisco/ios
1.8.0
cisco/ir510_wpan_firmware
Published
Sep 25, 2019
Tracked Since
Feb 18, 2026