CVE-2021-34762

HIGH

Cisco Firepower Management Center - Authenticated Path Traversal and Arbitrary File Write via HTTPS Request

Title source: llm
STIX 2.1

Description

A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to perform a directory traversal attack on an affected device. The attacker would require valid device credentials. The vulnerability is due to insufficient input validation of the HTTPS URL by the web-based management interface. An attacker could exploit this vulnerability by sending a crafted HTTPS request that contains directory traversal character sequences to an affected device. A successful exploit could allow the attacker to read or write arbitrary files on the device.

References (1)

Core 1

Scores

CVSS v3 8.1
EPSS 0.0019
EPSS Percentile 41.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-26 CWE-22
Status published
Products (19)
cisco/firepower_management_center_virtual_appliance 6.2.3
cisco/firepower_management_center_virtual_appliance 6.4.0
cisco/firepower_management_center_virtual_appliance 6.5.0
cisco/firepower_management_center_virtual_appliance 6.6.1
cisco/firepower_management_center_virtual_appliance 6.6.2
cisco/firepower_management_center_virtual_appliance 6.6.3
cisco/firepower_management_center_virtual_appliance 6.6.4
cisco/firepower_management_center_virtual_appliance 6.7.0
cisco/firepower_management_center_virtual_appliance 7.0.0
cisco/firepower_management_center_virtual_appliance 7.1.0
... and 9 more
Published Oct 27, 2021
Tracked Since Feb 18, 2026