There is remote authenticated OS command injection on TP-Link Archer C20i 0.9.1 3.2 v003a.0 Build 170221 Rel.55462n devices vie the X_TP_ExternalIPv6Address HTTP parameter, allowing a remote attacker to run arbitrary commands on the router with root privileges
Published Mar 4, 2022
8.8
HIGHCVSS 3.1
EPSS 53.96%
Description
There is remote authenticated OS command injection on TP-Link Archer C20i 0.9.1 3.2 v003a.0 Build 170221 Rel.55462n devices vie the X_TP_ExternalIPv6Address HTTP parameter, allowing a remote attacker to run arbitrary commands on the router with root privileges.
Affected products
No data.
- ≤ 170221
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:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:C/I:C/A:C
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 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (28 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 53.96% (0.53956) | 98.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 53.96% (0.53956) | 98.87th | v5 (v2026.06.15) |
| Nov 21, 2025 | 44.78% (0.44777) | 97.42th | v4 (v2025.03.14) |
| Nov 18, 2025 | 38.37% (0.38371) | 97.06th | v4 (v2025.03.14) |
| Oct 29, 2025 | 44.78% (0.44777) | 97.41th | v4 (v2025.03.14) |
| Oct 17, 2025 | 38.10% (0.38105) | 97.02th | v4 (v2025.03.14) |
| Mar 30, 2025 | 44.94% (0.44941) | 97.32th | v4 (v2025.03.14) |
| Mar 29, 2025 | 62.13% (0.62132) | 97.65th | v4 (v2025.03.14) |
| Mar 28, 2025 | 44.94% (0.44941) | 97.31th | v4 (v2025.03.14) |
| Mar 27, 2025 | 62.13% (0.62132) | 98.11th | v4 (v2025.03.14) |
| Mar 20, 2025 | 56.88% (0.56884) | 97.96th | v4 (v2025.03.14) |
| Mar 19, 2025 | 62.13% (0.62132) | 98.15th | v4 (v2025.03.14) |
| Mar 17, 2025 | 56.88% (0.56884) | 97.91th | v4 (v2025.03.14) |
| Mar 7, 2025 | 4.36% (0.04361) | 92.45th | v3 (v2023.03.01) |
| May 26, 2024 | 2.18% (0.02181) | 89.37th | v3 (v2023.03.01) |
| Jan 19, 2024 | 1.88% (0.01884) | 87.20th | v3 (v2023.03.01) |
| Nov 7, 2023 | 1.34% (0.01337) | 84.64th | v3 (v2023.03.01) |
| Oct 24, 2023 | 0.95% (0.00952) | 81.47th | v3 (v2023.03.01) |
| Oct 10, 2023 | 0.76% (0.00760) | 79.02th | v3 (v2023.03.01) |
| Sep 25, 2023 | 0.52% (0.00520) | 74.00th | v3 (v2023.03.01) |
| Mar 11, 2023 | 0.39% (0.00391) | 69.14th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.20% (0.00200) | 56.05th | v3 (v2023.03.01) |
| Mar 6, 2023 | 11.75% (0.11752) | 95.16th | v2 (v2022.01.01) |
| Apr 18, 2022 | 11.75% (0.11752) | 94.80th | v2 (v2022.01.01) |
| Apr 8, 2022 | 1.06% (0.01061) | 49.27th | v2 (v2022.01.01) |
| Apr 1, 2022 | 11.75% (0.11752) | 94.77th | v2 (v2022.01.01) |
| Mar 16, 2022 | 11.75% (0.11752) | 89.36th | v2 (v2022.01.01) |
| Mar 5, 2022 | 1.41% (0.01412) | 50.78th | v2 (v2022.01.01) |
References (3)
- https://Full-Disclosure.eu x_refsource_MISCExploitThird Party Advisory
- https://full-disclosure.eu/reports/2022/CVE-2021-44827-tplink-authenticated-remote-code-execution.html x_refsource_MISCExploitThird Party Advisory
- https://www.tp-link.com/us/security x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://Full-Disclosure.eu | x_refsource_MISCExploitThird Party Advisory | |
| https://full-disclosure.eu/reports/2022/CVE-2021-44827-tplink-authenticated-remote-code-execution.html | x_refsource_MISCExploitThird Party Advisory | |
| https://www.tp-link.com/us/security | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.