A vulnerability in the SSL/TLS client of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper memory management when a device initiates SSL/TLS connections. An attacker could exploit this vulnerability by ensuring that the device will connect to an SSL/TLS server that is using specific encryption parameters. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a DoS condition.
This vulnerability is due to improper memory management when a device initiates SSL/TLS connections. An attacker could exploit this vulnerability by ensuring that the device will connect to an SSL/TLS server that is using specific encryption parameters. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a DoS condition.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Cisco | Cisco Adaptive Security Appliance (ASA) Software | affected |
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| Cisco | Cisco Firepower Threat Defense Software | affected |
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| Cisco | Cisco FirePOWER Services Software for ASA | affected |
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Configuration 1 [-]
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Configuration 2 [-]
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Configuration 3 [-]
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Project Subscriptions
Advisories
| Source | ID | Title |
|---|---|---|
 EUVD |
EUVD-2022-26177 | A vulnerability in the SSL/TLS client of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management when a device initiates SSL/TLS connections. An attacker could exploit this vulnerability by ensuring that the device will connect to an SSL/TLS server that is using specific encryption parameters. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a DoS condition. |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 11 Aug 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cisco secure Firewall Threat Defense
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| CPEs | cpe:2.3:a:cisco:firepower_threat_defense:6.6.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:6.6.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:6.6.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:6.6.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:6.6.4:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:6.6.5.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:firepower_threat_defense:6.6.5:*:*:*:*:*:*:* |
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.0:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.3:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.4:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.5.1:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.6.5:*:*:*:*:*:*:* |
| Vendors & Products |
Cisco firepower Threat Defense
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Cisco secure Firewall Threat Defense
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Projects
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MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2024-08-03T02:31:59.588Z
Reserved: 2021-11-02T13:28:29.191Z
Link: CVE-2022-20927
Vulnrichment
No data.
NVD
Status : Modified
Published: 2022-11-15T21:15:32.607
Modified: 2026-08-11T19:33:44.513
Link: CVE-2022-20927
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses