CVE-2021-1477

mediumpriority · track · 17EPSS 0.007 · 52 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.68% (52nd) EPSS
CVSS 4 · medium
Is it mine?
32 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in an access control mechanism of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to access services beyond the scope of their authorization. This vulnerability is due to insufficient enforcement of access control in the affected software. An attacker could exploit this vulnerability by directly accessing the internal services of an affected device. A successful exploit could allow the attacker to overwrite policies and impact the configuration and operation of the affected device.

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) 6.2.3.14 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) 6.2.3.2 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) 6.2.3.8 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) 6.4.0.2 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) 6.4.0.4 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) 6.4.0.8 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
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

v2.04mediumAV:N/AC:L/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9
v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4
v3.14.3mediumAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU
v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nsecondary · ENISA EU
v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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-284USCWE-284US
05

affected products (32)

Products and version ranges known to be affected.

showing 20 of 32
06

advisories (1)

Vendor and ecosystem advisories describing this.

  • cisco-sa-fmc-iac-pZDMQ4wCCisco Firepower Management Center Software Policy Vulnerability2021-04-28csaf · cisco_csafUS

    A vulnerability in an access control mechanism of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to access services beyond the scope of their authorization. This vulnerability is due to insufficient enforcement of access control in the affected software. An attacker could exploit this vulnerability by directly accessing the internal services of an affected device. A successful exploit could allow the attacker to overwrite policies and impact the configuration and operation of the affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.

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 2021-04-29modified 2026-06-17
09

references (6)

External citations — patches, advisories, analysis.

scry

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