CVE-2026-20342 Cisco Secure FMC Software - Path Traversal

Cisco Secure FMC Software contains a path traversal caused by unsanitized user input in the file download API, letting authenticated remote attackers download arbitrary files, exploit requires Security Analyst role or higher.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.55% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Path Traversal
Impact
File System Read, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-639

Vendor fix

Update to the latest available version of Cisco Secure FMC Software.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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