This vulnerability is due to improper resource management when processing certain DTLS messages. An attacker could exploit this vulnerability by sending a crafted stream of DTLS traffic to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
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 Secure Firewall Adaptive Security Appliance (ASA) Software | unknown |
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| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | unknown |
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No vendor fix or workaround currently provided.
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Tracking
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Wed, 16 Sep 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A vulnerability in Datagram TLS (DTLS) message handling of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software for Cisco Secure Firewall 3100 Series and 4200 Series devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper resource management when processing certain DTLS messages. An attacker could exploit this vulnerability by sending a crafted stream of DTLS traffic to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. | |
| Title | Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software for Firepower 3100 and 4200 Series DTLS Denial of Service Vulnerability | |
| Weaknesses | CWE-772 | |
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| Metrics |
cvssV3_1
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2026-09-16T20:09:56.693Z
Reserved: 2025-10-08T11:59:15.401Z
Link: CVE-2026-20250
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-16T21:17:08.713
Modified: 2026-09-16T21:17:08.713
Link: CVE-2026-20250
Redhat
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OpenCVE Enrichment
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