CVE-2026-20064A vulnerability in of Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, local attacker to cause the device…
- 6.5MediumCVSS base score
- 0.11%Exploitation in 30 daysEPSS · top 99% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By cisco
- 5 months later
· 5 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | Medium6.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.11% · top 99% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Affected products
Cisco · Cisco Secure Firewall Threat Defense (FTD) Software
- affected 6.4.0
- affected 6.4.0.1
- affected 6.4.0.3
- affected 6.4.0.2
- affected 6.4.0.4
- affected 6.4.0.5
- affected 6.4.0.6
- affected 6.4.0.7
- affected 6.4.0.8
- affected 6.4.0.9
- affected 6.4.0.10
- affected 6.4.0.11
- affected 6.4.0.12
- affected 6.4.0.13
- affected 6.4.0.14
- affected 6.4.0.15
- affected 6.4.0.16
- affected 6.4.0.17
- affected 6.4.0.18
- affected 7.0.0
- affected 7.0.0.1
- affected 7.0.1
- affected 7.0.1.1
- affected 7.0.2
- affected 7.0.2.1
- affected 7.0.3
- affected 7.0.4
- affected 7.0.5
- affected 7.0.6
- affected 7.0.6.1
- affected 7.0.6.2
- affected 7.0.6.3
- affected 7.0.7
- affected 7.0.8
- affected 7.0.8.1
- affected 7.1.0
- affected 7.1.0.1
- affected 7.1.0.2
- affected 7.1.0.3
- affected 7.2.0
- and 35 more
What to do
Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-9483 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-20064)Record last updated .