Cisco Firepower Management Center Information Disclosure Vulnerability

published 2021-01-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-6593

cvss: 5.5; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

A vulnerability in the storage of proxy server credentials of Cisco Firepower Management Center (FMC) could allow an authenticated, local attacker to view credentials for a configured proxy server. The vulnerability is due to clear-text storage and weak permissions of related configuration files. An attacker could exploit this vulnerability by accessing the CLI of the affected software and viewing the contents of the affected files. A successful exploit could allow the attacker to view the credentials that are used to access the proxy server.

Patch / fix

fixed in 1

cisco secure_firewall_management_center 6.7.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-11-08)

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

Cisco Cisco Firepower Management Center

Classification

Weakness

CWE-256 Plaintext Storage of a Password
CWE-522 Insufficiently Protected Credentials
CWE-732 Incorrect Permission Assignment for Critical Resource

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-infodisc-RJdktM6f
vendor-advisory

Sources

CVE List CVE-2021-1126
NVD CVE-2021-1126

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Summary