CVE-2020-11622

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.

Published: 2020-06-10 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-11622 is rated Moderate Risk (48.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.34%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-11622

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-04-05 0.44% 0.34% -0.09%
2 2025-03-30 0.70% 0.44% -0.27%
3 2025-03-29 — 0.70% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-11622

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2020-11622

Affected software / configurations for CVE-2020-11622

Vendor Product Version Raw CPE
arista cloudeos >= 4.21.3m, <= 4.21.9m cpe:2.3:a:arista:cloudeos:*:*:*:*:*:*:*:*
arista cloudeos >= 4.22.0, <= 4.22.4m cpe:2.3:a:arista:cloudeos:*:*:*:*:*:*:*:*
arista cloudeos >= 4.23.0, <= 4.23.2m cpe:2.3:a:arista:cloudeos:*:*:*:*:*:*:*:*
arista cloudeos 4.21.3fx-7368 cpe:2.3:a:arista:cloudeos:4.21.3fx-7368:*:*:*:*:*:*:*
arista cloudeos 4.21.4-fcrfx cpe:2.3:a:arista:cloudeos:4.21.4-fcrfx:*:*:*:*:*:*:*
arista cloudeos 4.21.4.1 cpe:2.3:a:arista:cloudeos:4.21.4.1:*:*:*:*:*:*:*
arista cloudeos 4.21.7.1 cpe:2.3:a:arista:cloudeos:4.21.7.1:*:*:*:*:*:*:*
arista cloudeos 4.22.2.0.1 cpe:2.3:a:arista:cloudeos:4.22.2.0.1:*:*:*:*:*:*:*
arista cloudeos 4.22.2.2.1 cpe:2.3:a:arista:cloudeos:4.22.2.2.1:*:*:*:*:*:*:*
arista cloudeos 4.22.3.1 cpe:2.3:a:arista:cloudeos:4.22.3.1:*:*:*:*:*:*:*
arista cloudeos 4.23.2.1 cpe:2.3:a:arista:cloudeos:4.23.2.1:*:*:*:*:*:*:*
arista veos >= 4.21.3m, <= 4.21.9m cpe:2.3:a:arista:veos:*:*:*:*:*:*:*:*
arista veos >= 4.22.0, <= 4.22.4m cpe:2.3:a:arista:veos:*:*:*:*:*:*:*:*
arista veos >= 4.23.0, <= 4.23.2m cpe:2.3:a:arista:veos:*:*:*:*:*:*:*:*
arista veos 4.21.3fx-7368 cpe:2.3:a:arista:veos:4.21.3fx-7368:*:*:*:*:*:*:*
arista veos 4.21.4-fcrfx cpe:2.3:a:arista:veos:4.21.4-fcrfx:*:*:*:*:*:*:*
arista veos 4.21.4.1 cpe:2.3:a:arista:veos:4.21.4.1:*:*:*:*:*:*:*
arista veos 4.21.7.1 cpe:2.3:a:arista:veos:4.21.7.1:*:*:*:*:*:*:*
arista veos 4.22.2.0.1 cpe:2.3:a:arista:veos:4.22.2.0.1:*:*:*:*:*:*:*
arista veos 4.22.2.2.1 cpe:2.3:a:arista:veos:4.22.2.2.1:*:*:*:*:*:*:*
arista veos 4.22.3.1 cpe:2.3:a:arista:veos:4.22.3.1:*:*:*:*:*:*:*
arista veos 4.23.2.1 cpe:2.3:a:arista:veos:4.23.2.1:*:*:*:*:*:*:*

References for CVE-2020-11622

cvelogic Threat Intelligence