CVE-2020-11622
Last modified
CVE-2020-11622 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368.*, 4.21.4-FCRFX.*, 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.. EPSS estimates a 1.28% chance of exploitation in the next 30 days.
Description
A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368.*, 4.21.4-FCRFX.*, 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Arista | Cloudeos | >= 4.21.3m, <= 4.21.9m |
| Arista | Cloudeos | >= 4.22.0, <= 4.22.4m |
| Arista | Cloudeos | >= 4.23.0, <= 4.23.2m |
| Arista | Cloudeos | 4.21.3fx-7368 |
| Arista | Cloudeos | 4.21.4-fcrfx |
| Arista | Cloudeos | 4.21.4.1 |
| Arista | Cloudeos | 4.21.7.1 |
| Arista | Cloudeos | 4.22.2.0.1 |
| Arista | Cloudeos | 4.22.2.2.1 |
| Arista | Cloudeos | 4.22.3.1 |
| Arista | Cloudeos | 4.23.2.1 |
| Arista | Veos | >= 4.21.3m, <= 4.21.9m |
| Arista | Veos | >= 4.22.0, <= 4.22.4m |
| Arista | Veos | >= 4.23.0, <= 4.23.2m |
| Arista | Veos | 4.21.3fx-7368 |
| Arista | Veos | 4.21.4-fcrfx |
| Arista | Veos | 4.21.4.1 |
| Arista | Veos | 4.21.7.1 |
| Arista | Veos | 4.22.2.0.1 |
| Arista | Veos | 4.22.2.2.1 |
| Arista | Veos | 4.22.3.1 |
| Arista | Veos | 4.23.2.1 |
References
- https://www.arista.com/en/support/advisories-noticesVendor Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/11195-security-advisory-49Mitigation, Vendor Advisory
- https://www.arista.com/en/support/advisories-noticesVendor Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/11195-security-advisory-49Mitigation, Vendor Advisory
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.
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