CVE-2020-3209
MEDIUMCisco IOS XE - Unauthenticated Digital Signature Verification Bypass
Title source: llmDescription
A vulnerability in software image verification in Cisco IOS XE Software could allow an unauthenticated, physical attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability is due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. An attacker could exploit this vulnerability by loading unsigned software on an affected device. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.
References (1)
Core 1
Core References
Patch, Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-digsig-bypass-FYQ3bmVq
Scores
CVSS v3
6.8
EPSS
0.0004
EPSS Percentile
14.2%
Attack Vector
PHYSICAL
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-347
Status
published
Products (50)
cisco/ios_xe
3.2.0se
cisco/ios_xe
3.2.0sg
cisco/ios_xe
3.2.1se
cisco/ios_xe
3.2.1sg
cisco/ios_xe
3.2.2se
cisco/ios_xe
3.2.2sg
cisco/ios_xe
3.2.3se
cisco/ios_xe
3.2.3sg
cisco/ios_xe
3.2.4sg
cisco/ios_xe
3.2.5sg
... and 40 more
Published
Jun 03, 2020
Tracked Since
Feb 18, 2026