CVE-2020-3477

MEDIUM

Cisco IOS Software - Privilege Escalation

Title source: llm
STIX 2.1

Description

A vulnerability in the CLI parser of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker to access files from the flash: filesystem. The vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker could exploit this vulnerability by using a specific command at the command line. A successful exploit could allow the attacker to obtain read-only access to files that are located on the flash: filesystem that otherwise might not have been accessible.

References (1)

Core 1

Scores

CVSS v3 5.5
EPSS 0.0005
EPSS Percentile 15.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-20 CWE-863
Status published
Products (1)
cisco/ios 16.3.11
Published Sep 24, 2020
Tracked Since Feb 18, 2026