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
Published Feb 20, 2020
9.8
CRITICALCVSS 3.1
EPSS 16.46%
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
No data.
Configuration 1
- 4.20.9m
Running on/with
- n/a
Configuration 2
- 4.20.11m
Running on/with
- n/a
Configuration 3
- 4.22.0.1f
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 16.46% (0.16464) | 96.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 16.08% (0.16080) | 96.50th | v5 (v2026.06.15) |
| Dec 19, 2025 | 78.41% (0.78409) | 98.98th | v4 (v2025.03.14) |
| Nov 21, 2025 | 67.48% (0.67484) | 98.49th | v4 (v2025.03.14) |
| Nov 18, 2025 | 51.74% (0.51743) | 97.78th | v4 (v2025.03.14) |
| May 11, 2025 | 67.48% (0.67484) | 98.45th | v4 (v2025.03.14) |
| Apr 8, 2025 | 65.63% (0.65626) | 98.37th | v4 (v2025.03.14) |
| Mar 30, 2025 | 67.48% (0.67484) | 98.45th | v4 (v2025.03.14) |
| Mar 29, 2025 | 69.05% (0.69045) | 98.12th | v4 (v2025.03.14) |
| Mar 17, 2025 | 67.48% (0.67484) | 98.45th | v4 (v2025.03.14) |
| Dec 17, 2024 | 4.49% (0.04485) | 92.36th | v3 (v2023.03.01) |
| May 17, 2024 | 5.74% (0.05742) | 93.32th | v3 (v2023.03.01) |
| Dec 25, 2023 | 5.23% (0.05229) | 92.25th | v3 (v2023.03.01) |
| Dec 10, 2023 | 5.03% (0.05034) | 92.03th | v3 (v2023.03.01) |
| Nov 8, 2023 | 4.26% (0.04258) | 91.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.77% (0.02774) | 88.97th | v3 (v2023.03.01) |
| Mar 6, 2023 | 34.69% (0.34691) | 97.78th | v2 (v2022.01.01) |
| Apr 1, 2022 | 34.69% (0.34691) | 97.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 76.94% (0.76943) | 99.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 25.84% (0.25842) | 95.62th | v1 |
| Jan 6, 2022 | 25.84% (0.25842) | 95.57th | v1 |
| Sep 1, 2021 | 7.21% (0.07207) | 91.33th | v1 |
| Apr 14, 2021 | 7.21% (0.07207) | 0.00th | v1 |
No CWE recorded.
References (4)
- http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html x_refsource_MISC
- https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/ x_refsource_MISC
- https://securitybytes.me x_refsource_MISCThird Party Advisory
- https://securitybytes.me/posts/cve-2020-9015/ x_refsource_MISCBroken Link
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html | x_refsource_MISC | |
| https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/ | x_refsource_MISC | |
| https://securitybytes.me | x_refsource_MISCThird Party Advisory | |
| https://securitybytes.me/posts/cve-2020-9015/ | x_refsource_MISCBroken Link |
Change history (0)
No recorded changes yet.