This vulnerability is due to improper management of memory resources during sftunnel TLS connection setup. An attacker could exploit this vulnerability by sending crafted sftunnel TLS frames to an affected device during the connection setup. A successful exploit could allow the attacker to exhaust the available memory on the affected device, which could result in a DoS condition.
Metrics
Affected Vendors & Products
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Solution
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Workaround
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Thu, 17 Sep 2026 14:30:00 +0000
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ssvc
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Wed, 16 Sep 2026 20:30:00 +0000
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| Description | A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to exhaust the available memory of an affected device. This vulnerability is due to improper management of memory resources during sftunnel TLS connection setup. An attacker could exploit this vulnerability by sending crafted sftunnel TLS frames to an affected device during the connection setup. A successful exploit could allow the attacker to exhaust the available memory on the affected device, which could result in a DoS condition. | |
| Title | Cisco Secure Firewall Management Center and Secure Firewall Threat Defense Software sftunnel Memory Exhaustion Denial of Service Vulnerability | |
| Weaknesses | CWE-789 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2026-09-17T13:40:57.982Z
Reserved: 2025-10-08T11:59:15.405Z
Link: CVE-2026-20295
Vulnrichment
Updated: 2026-09-17T13:36:18.091Z
NVD
Status : Received
Published: 2026-09-16T21:17:09.740
Modified: 2026-09-17T14:17:13.167
Link: CVE-2026-20295
Redhat
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OpenCVE Enrichment
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