CVE-2021-34751

mediumpriority · track · 0EPSS 0.003 · 20 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.28% (20th) EPSS
CVSS 4.3 · medium
Is it mine?
48 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in the administrative web-based GUI configuration manager of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to access sensitive configuration information. The attacker would require low privilege credentials on an affected device. This vulnerability exists because of improper encryption of sensitive information stored within the GUI configuration manager. An attacker could exploit this vulnerability by logging into the GUI of Cisco FMC Software and navigating to certain sensitive configurations. A successful exploit could allow the attacker to view sensitive configuration parameters in clear text.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.[[Publication_URL{Layout()}]]This advisory is part of the October 2021 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see . 

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.10 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.11 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.12 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.13 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.14 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.15 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.16 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.17 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.2 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.3 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.4 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.5 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.6 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.7 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.8 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.2.3.9 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.10 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.11 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.12 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.2 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.3 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.4 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.5 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.6 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.7 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.8 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.4.0.9 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.6.0 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.6.0.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.6.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.6.3 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.6.4 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 6.6.5 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 7.0.0 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • FixedCisco Secure Firewall Management Center (FMC) 7.0.0.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliancescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
02

cvss

Technical severity, 0–10. One row per scoring source.

4.3
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.3mediumAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU
v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU
v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · psirt@cisco.com USexploitability 2.8 · impact 1.4
v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · Cisco PSIRT US
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-317USCWE-317US
05

affected products (48)

Products and version ranges known to be affected.

showing 20 of 48
06

advisories (1)

Vendor and ecosystem advisories describing this.

  • cisco-sa-fmc-infodisc-Ft2WVmNUCisco Firepower Management Center Software Configuration Information Disclosure Vulnerabilities2021-10-27csaf · cisco_csafUS

    Multiple vulnerabilities in the administrative web-based GUI configuration manager of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to access sensitive configuration information. The attacker would require low privilege credentials on an affected device. These vulnerabilities exist because of improper encryption of sensitive information stored within the GUI configuration manager. An attacker could exploit these vulnerabilities by logging into the GUI of Cisco FMC Software and navigating to certain sensitive configurations. A successful exploit could allow the attacker to view sensitive configuration parameters in clear text. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is part of the October 2021 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see Cisco Event Response: October 2021 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74773"].

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisco_csafNVDCVE.orgMITRE
published 2024-11-15modified 2026-06-17
09

references (6)

External citations — patches, advisories, analysis.

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