Cisco Firepower Management Center Software Authenticated Directory Traversal Vulnerability
Summary
| CVE | CVE-2021-34762 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-10-27 19:15:08 UTC |
| Updated | 2026-08-11 19:37:30 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 8.1 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Problem Types: CWE-26 | CWE-22 | CWE-26 CWE-26
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 8.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | [email protected] | Secondary | 8.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | CNA | DECLARED | 8.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| 2.0 | [email protected] | Primary | 5.5 | AV:N/AC:L/Au:S/C:P/I:P/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
SingleConfidentiality
PartialIntegrity
PartialAvailability
NoneAV:N/AC:L/Au:S/C:P/I:P/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Cisco | Firepower Management Center Virtual Appliance | 6.2.3 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 6.4.0 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 6.5.0 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 6.6.1 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 6.6.2 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 6.6.3 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 6.6.4 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 6.7.0 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 7.0.0 | All | All | All |
| Application | Cisco | Firepower Management Center Virtual Appliance | 7.1.0 | All | All | All |
| Application | Cisco | Secure Firewall Threat Defense | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Firepower Management Center | affected n/a | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Cisco Firepower Management Center Software Authenticated Directory Traversal Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | tools.cisco.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Exploits
CNA: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
There are currently no legacy QID mappings associated with this CVE.