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High severity8.1NVD Advisory· Published Oct 27, 2021· Updated Aug 11, 2026

CVE-2021-34762

CVE-2021-34762

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

21
  • Cisco Systems, Inc./Firepower Management Center Virtual Appliance10 versions
    cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.2.3:*:*:*:*:*:*:*+ 9 more
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.2.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.4.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.5.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.6.1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.6.2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.6.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.6.4:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.7.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:7.0.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:7.1.0:*:*:*:*:*:*:*
  • Cisco Systems, Inc./Secure Firewall Threat Defense
    cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
    Range: <6.4.0.13
  • Cisco Systems, Inc./Sourcefire Defense Center8 versions
    cpe:2.3:a:cisco:sourcefire_defense_center:6.2.3:*:*:*:*:*:*:*+ 7 more
    • cpe:2.3:a:cisco:sourcefire_defense_center:6.2.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:sourcefire_defense_center:6.4.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:sourcefire_defense_center:6.5.0:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:sourcefire_defense_center:6.6.1:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:sourcefire_defense_center:6.6.2:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:sourcefire_defense_center:6.6.3:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:sourcefire_defense_center:6.6.4:*:*:*:*:*:*:*
    • cpe:2.3:a:cisco:sourcefire_defense_center:7.0.0:*:*:*:*:*:*:*
  • Cisco Systems, Inc./Firepower Management Center (FMC) Softwarellm-fuzzy2 versions
    (expand)+ 1 more
    • (no CPE)
    • (no CPE)range: n/a

Patches

Vulnerability mechanics

References

1

News mentions

0

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