CVE-2026-20025
Last modified
CVE-2026-20025 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To exploit this vulnerability, the attacker must have the OSPF secret key. This vulnerability is due to insufficient input validation when processing OSPF link-state update (LSU) packets. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To exploit this vulnerability, the attacker must have the OSPF secret key. This vulnerability is due to insufficient input validation when processing OSPF link-state update (LSU) packets. An attacker could exploit this vulnerability by sending crafted OSPF LSU packets. A successful exploit could allow the attacker to corrupt the heap, causing the device to reload, resulting in a DoS condition.
Metrics
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Secure Firewall Threat Defense | >= 6.4.0, < 7.0.9 |
| Cisco | Secure Firewall Threat Defense | >= 7.1.0, < 7.2.11 |
| Cisco | Secure Firewall Threat Defense | >= 7.3.0, < 7.4.3 |
| Cisco | Secure Firewall Threat Defense | >= 7.6.0, < 7.6.4 |
| Cisco | Secure Firewall Threat Defense | >= 7.7.0, < 7.7.11 |
| Cisco | Adaptive Security Appliance Software | >= 9.12.1, < 9.16.4.85 |
| Cisco | Adaptive Security Appliance Software | >= 9.17.1, < 9.18.4.66 |
| Cisco | Adaptive Security Appliance Software | >= 9.19.1, < 9.20.4 |
| Cisco | Adaptive Security Appliance Software | >= 9.22.1.1, < 9.22.2.4 |
| Cisco | Adaptive Security Appliance Software | >= 9.23.1, < 9.23.1.7 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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