CVE-2026-20022
Last modified
CVE-2026-20022 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition when OSPF canonicalization debug is enabled by using the command debug ip ospf canon. This vulnerability is due to insufficient input validation when processing OSPF LSU packets. An attacker could exploit this vulnerability by sending crafted unauthenticated OSPF packets. EPSS estimates a 0.19% 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 unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition when OSPF canonicalization debug is enabled by using the command debug ip ospf canon. This vulnerability is due to insufficient input validation when processing OSPF LSU packets. An attacker could exploit this vulnerability by sending crafted unauthenticated OSPF packets. A successful exploit could allow the attacker to write to memory outside of the packet data, causing the device to reload, resulting in a DoS condition.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Adaptive Security Appliance Software | 9.12.1 |
| Cisco | Adaptive Security Appliance Software | 9.12.1.2 |
| Cisco | Adaptive Security Appliance Software | 9.12.1.3 |
| Cisco | Adaptive Security Appliance Software | 9.12.2 |
| Cisco | Adaptive Security Appliance Software | 9.12.2.1 |
| Cisco | Adaptive Security Appliance Software | 9.12.2.4 |
| Cisco | Adaptive Security Appliance Software | 9.12.2.5 |
| Cisco | Adaptive Security Appliance Software | 9.12.2.9 |
| Cisco | Adaptive Security Appliance Software | 9.12.3 |
| Cisco | Adaptive Security Appliance Software | 9.12.3.2 |
| Cisco | Adaptive Security Appliance Software | 9.12.3.7 |
| Cisco | Adaptive Security Appliance Software | 9.12.3.9 |
| Cisco | Adaptive Security Appliance Software | 9.12.3.12 |
| Cisco | Adaptive Security Appliance Software | 9.12.4 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.2 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.4 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.7 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.8 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.10 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.13 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.18 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.24 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.26 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.29 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.30 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.35 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.37 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.38 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.39 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.40 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.41 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.47 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.48 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.50 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.52 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.54 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.55 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.56 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.58 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.62 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.65 |
| Cisco | Adaptive Security Appliance Software | 9.12.4.67 |
| Cisco | Adaptive Security Appliance Software | 9.16.1 |
| Cisco | Adaptive Security Appliance Software | 9.16.1.28 |
| Cisco | Adaptive Security Appliance Software | 9.16.2 |
| Cisco | Adaptive Security Appliance Software | 9.16.2.3 |
| Cisco | Adaptive Security Appliance Software | 9.16.2.7 |
| Cisco | Adaptive Security Appliance Software | 9.16.2.11 |
| Cisco | Adaptive Security Appliance Software | 9.16.2.13 |
| Cisco | Adaptive Security Appliance Software | 9.16.2.14 |
Showing 50 of 239 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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