CVE-2021-1273
Last modified
CVE-2021-1273 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.. EPSS estimates a 1.39% chance of exploitation in the next 30 days.
Description
Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe Sd-Wan | All versions |
| Cisco | Sd-Wan Firmware | 18.3.5 |
| Cisco | Sd-Wan Firmware | 18.3.8 |
| Cisco | Sd-Wan Firmware | 18.4.1 |
| Cisco | Sd-Wan Firmware | 18.4.4 |
| Cisco | Sd-Wan Firmware | 18.4.5 |
| Cisco | Sd-Wan Firmware | 19.2.0 |
| Cisco | Sd-Wan Firmware | 19.2.1 |
| Cisco | Sd-Wan Firmware | 19.2.2 |
| Cisco | Sd-Wan Firmware | 19.2.99 |
| Cisco | Sd-Wan Firmware | 20.1.0 |
| Cisco | Sd-Wan Vsmart Controller Firmware | All versions |
| Cisco | Catalyst Sd-Wan Manager | All versions |
| Cisco | Sd-Wan Vbond Orchestrator | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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