What’s Vulnerable › Vulnerabilities

CVE-2020-9015

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 16.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-02-20 · updated 2026-06-17

Description

Arista DCS-7050QX-32S-R 4.20.9M, DCS-7050CX3-32S-R 4.20.11M, and DCS-7280SRAM-48C6-R 4.22.0.1F devices (and possibly other products) allow attackers to bypass intended TACACS+ shell restrictions via a | character. NOTE: the vendor reports that this is a configuration issue relating to an overly permissive regular expression in the TACACS+ server permitted commands

Affected products

• Arista Dcs-7050Cx3-32S-R Firmware: 4.20.11m
• Arista Dcs-7050Qx-32S-R Firmware: 4.20.9m
• Arista Dcs-7280Sram-48C6-R Firmware: 4.22.0.1f

References

• http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html
• https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/
• https://securitybytes.me
• https://securitybytes.me/posts/cve-2020-9015/
• http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html
• https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/
• https://securitybytes.me
• https://securitybytes.me/posts/cve-2020-9015/

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