Cisco Secure Firewall Threat Defense Decryption Policy Denial of Service Vulnerability (Cisco Cisco Secure Firewall Threat Defense (FTD) Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.43 % Β· percentile 37 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Analyzed
Description
A vulnerability in the Do Not Decrypt exclusion feature of the SSL decryption feature of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management during the inspection of TLS 1.2 encrypted traffic. An attacker could exploit this vulnerability by sending crafted TLS 1.2 encrypted traffic through an affected device. A successful exploit could allow the attacker to cause a reload of an affected device. Note: This vulnerability only affects traffic that is encrypted by TLS 1.2. Other versions of TLS are not affected.
Weaknesses (CWE)
- CWE-404 β Improper Resource Shutdown or Release
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H | cisco |
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD Β· psirt@cisco.com (Secondary) |
European references
- ENISA EUVD Β· EUVD-2026-9457
- GCVE Β· GCVE-0-2026-20050
Affected configurations (NVD CPE)
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*β₯ 7.1.0 < 7.2.11cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*β₯ 7.3.0 < 7.4.4cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*β₯ 7.6.0 < 7.6.4cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*β₯ 7.7.0 < 7.7.11
Affected products
| Product | Versions |
|---|---|
| Cisco Β· Cisco Secure Firewall Threat Defense (FTD) Software | affected 7.0.0 ; affected 7.0.0.1 ; affected 7.0.1 ; affected 7.1.0 ; affected 7.0.1.1 ; affected 7.1.0.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST β attribution requested |
| ENISA EUVD | ENISA β reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain β this product uses data from the NVD API but is not endorsed or certified by the NVD |