A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite files on the file system of an affected device by using directory traversal techniques. A successful exploit could cause system instability if important system files are overwritten. This vulnerability is due to insufficient validation of user input for the file path in a specific CLI command. An attacker could exploit this vulnerability by logging in to a targeted device and issuing a specific CLI command with crafted user input. A successful exploit could allow the attacker to overwrite arbitrary files on the file system of the affected device. The attacker would need valid user credentials on the device.
Published 2021-04-29 18:15:09
Updated 2023-06-30 17:08:37
View at NVD,   CVE.org
Vulnerability category: Directory traversal

Products affected by CVE-2021-1256

Exploit prediction scoring system (EPSS) score for CVE-2021-1256

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 8 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-1256

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
3.6
LOW AV:L/AC:L/Au:N/C:N/I:P/A:P
3.9
4.9
NIST
6.0
MEDIUM CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
0.8
5.2
Cisco Systems, Inc.
6.0
MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
0.8
5.2
NIST

CWE ids for CVE-2021-1256

References for CVE-2021-1256

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