Observable discrepancy in Cisco Firepower Threat Defense Software
Priority LOW 25CWE-203Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-203.
Summary
A vulnerability in the TLS handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to gain access to sensitive information. This vulnerability is due to improper implementation of countermeasures against a Bleichenbacher attack on a device that uses SSL decryption policies. An attacker could exploit this vulnerability by sending crafted TLS messages to an affected device, which would act as an oracle and allow the attacker to carry out a chosen-ciphertext attack. A successful exploit could allow the attacker to perform cryptanalytic operations that may allow decryption of previously captured TLS sessions to the affected device.
Why it matters now
EPSS 0.00792 56th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Firepower Threat Defense Software | 6.2.3; 6.2.3.1; 6.2.3.2; 6.2.3.3; 6.2.3.4; 6.2.3.5; 6.2.3.6; 6.2.3.7; 6.2.3.8; 6.2.3.10; 6.2.3.11; 6.2.3.9; 6.2.3.12; 6.2.3.13; 6.2.3.14; 6.2.3.15; 6.2.3.16; 6.2.3.17; 6.2.3.18; 6.6.0; 6.6.0.1; 6.6.1; 6.6.3; 6.6.4; 6.6.5; 6.6.5.1; 6.6.5.2; 6.4.0; 6.4.0.1; 6.4.0.3; 6.4.0.2; 6.4.0.4; 6.4.0.5; 6.4.0.6; 6.4.0.7; 6.4.0.8; 6.4.0.9; 6.4.0.10; 6.4.0.11; 6.4.0.12; 6.4.0.13; 6.4.0.14; 6.7.0; 6.7.0.1; 6.7.0.2; 6.7.0.3; 7.0.0; 7.0.0.1; 7.0.1; 7.0.1.1; 7.0.2; 7.0.2.1; 7.0.3; 7.1.0; 7.1.0.1; 7.1.0.2 | — | No fix listed | CNA |
- Cisco Firepower Threat Defense Software VendorCisco Affected 6.2.3; 6.2.3.1; 6.2.3.2; 6.2.3.3; 6.2.3.4; 6.2.3.5; 6.2.3.6; 6.2.3.7; 6.2.3.8; 6.2.3.10; 6.2.3.11; 6.2.3.9; 6.2.3.12; 6.2.3.13; 6.2.3.14; 6.2.3.15; 6.2.3.16; 6.2.3.17; 6.2.3.18; 6.6.0; 6.6.0.1; 6.6.1; 6.6.3; 6.6.4; 6.6.5; 6.6.5.1; 6.6.5.2; 6.4.0; 6.4.0.1; 6.4.0.3; 6.4.0.2; 6.4.0.4; 6.4.0.5; 6.4.0.6; 6.4.0.7; 6.4.0.8; 6.4.0.9; 6.4.0.10; 6.4.0.11; 6.4.0.12; 6.4.0.13; 6.4.0.14; 6.7.0; 6.7.0.1; 6.7.0.2; 6.7.0.3; 7.0.0; 7.0.0.1; 7.0.1; 7.0.1.1; 7.0.2; 7.0.2.1; 7.0.3; 7.1.0; 7.1.0.1; 7.1.0.2 Fixed in — No fix listed CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* | 6.2.3 – 6.2.3.18; 6.3.0 – 6.3.0.5; 6.4.0 – 6.4.0.14; 6.5.0 – 6.5.0.5; 6.7.0 – 6.7.0.3; 7.0.0 – 7.0.3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0:*:*:*:*:*:*:* | 6.6.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0.1:*:*:*:*:*:*:* | 6.6.0.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.1:*:*:*:*:*:*:* | 6.6.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.3:*:*:*:*:*:*:* | 6.6.3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.4:*:*:*:*:*:*:* | 6.6.4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.5:*:*:*:*:*:*:* | 6.6.5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.5.1:*:*:*:*:*:*:* | 6.6.5.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.5.2:*:*:*:*:*:*:* | 6.6.5.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.0:*:*:*:*:*:*:* | 7.1.0.0 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* Versions 6.2.3 – 6.2.3.18; 6.3.0 – 6.3.0.5; 6.4.0 – 6.4.0.14; 6.5.0 – 6.5.0.5; 6.7.0 – 6.7.0.3; 7.0.0 – 7.0.3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0:*:*:*:*:*:*:* Versions 6.6.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0.1:*:*:*:*:*:*:* Versions 6.6.0.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.1:*:*:*:*:*:*:* Versions 6.6.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.3:*:*:*:*:*:*:* Versions 6.6.3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.4:*:*:*:*:*:*:* Versions 6.6.4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.5:*:*:*:*:*:*:* Versions 6.6.5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.5.1:*:*:*:*:*:*:* Versions 6.6.5.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.5.2:*:*:*:*:*:*:* Versions 6.6.5.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.0:*:*:*:*:*:*:* Versions 7.1.0.0 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-20940
- 2026-10-03 Alias added: GHSA-xqwj-v278-6v7x
References
Other 1
More Cisco Secure Firewall Threat Defense vulnerabilities
- TI-2025-14628 Buffer overflow in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.9
- TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
- TI-2023-06973 Authentication bypass in Cisco Adaptive Security Appliance Software KEVCVSS 3.1CRITICAL 9.1
- TI-2026-82192 Denial of service in Cisco Secure Firewall ASA and FTD SSL VPN KEVCVSS 3.1HIGH 8.6
- TI-2026-16533 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense… KEVCVSS 3.1HIGH 8.6
- TI-2025-14657 Missing authorization in Cisco Secure Firewall Adaptive Security Appliance Software KEVCVSS 3.1HIGH 8.6
Sources
- CVE-2022-20940 · CVE Program
- CVE-2022-20940 · NVD
- FIRST EPSS
- GHSA-xqwj-v278-6v7x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences