Riskcovery

CVE-2026-20343

Cisco Secure Firewall Management Center Software Information Disclosure and Disk Denial of Service Vulnerability

State
Published
Severity
7.5 High
Published
Sep 16, 2026
Updated
Sep 18, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

Description

A vulnerability in a critical API for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to download sensitive files and use unbounded disk space.

This vulnerability exists because a critical API lacks authentication. An attacker could exploit this vulnerability by repeatedly invoking the API. A successful exploit could allow the attacker to download sensitive files that should be restricted and consume disk space so the device could become unresponsive, causing a DoS condition.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hcisco

Weaknesses

  • CWE-306 Missing Authentication for Critical Function

Affected Products

ProductVersions
Cisco Secure Firewall Management Center (FMC)Cisco
  • 7.3.0Affected
  • 7.3.1Affected
  • 7.3.1.1Affected
  • 7.4.0Affected
  • 7.4.1Affected
  • 7.4.1.1Affected
  • 7.3.1.2Affected
  • 7.6.0Affected
  • 7.4.2Affected
  • 7.4.2.1Affected
  • 7.7.0Affected
  • 7.4.2.2Affected
  • 7.6.1Affected
  • 7.4.2.3Affected
  • 7.6.2Affected
  • 7.7.10Affected
  • 7.6.2.1Affected
  • 7.7.10.1Affected
  • 7.4.2.4Affected
  • 7.4.3Affected
  • 7.6.3Affected
  • 7.7.11Affected
  • 7.6.4Affected
  • 10.0.0Affected
  • 7.4.4Affected
  • and 6 more versions

References

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