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CVE-2026-20064

MEDIUM · CVSS 6.5EPSS 0.1%EU EUVD

A vulnerability in of Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, local attacker to cause the device to unexpectedly reload, causing a denial of service (DoS) condition. This vulnerability is due to improper validation of user-supplied input. An attacker with a low-privileged account could exploit this vulnerability by using crafted commands at the CLI prompt. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Key facts

CVSS score
6.5 (v3.1)
Severity
MEDIUM
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weakness (CWE)
CWE-476
EPSS score
0.1% (1th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2026-9483)
Published
March 4, 2026
NVD last modified
August 11, 2026
Status
Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2026-9483 in the EU Vulnerability Database. Last updated in EUVD on March 4, 2026.

View on the EU Vulnerability Database

Affected products

  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense
  • cisco / secure firewall threat defense

and 26 more…

Certified products that may be affected

2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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