CVE-2020-3209CWE-347

Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability

Medium · published June 3, 2020

CVSS v3.0
6.8
EPSS
0%
Percentile
19.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
6.8 · MEDIUM
Vector
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00279 · 19.3th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2020-06-03T17:40Z
EPSS history
Timeline
  • 03 JUN 17:40Z
    Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability
    cvelistv5