Improper physical access control and use of hard-coded credentials in /etc/passwd permits an attacker with physical access to obtain a root shell via an unprotected UART port on the device
Published Mar 7, 2022
6.8
MEDIUMCVSS 3.1
EPSS 0.37%
Description
Improper physical access control and use of hard-coded credentials in /etc/passwd permits an attacker with physical access to obtain a root shell via an unprotected UART port on the device. The same port exposes an unauthenticated Das U-Boot BIOS shell.
Affected products
- Vendor n/a Product Phicomm Routers Defaultn/a
- Version K3CStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Phicomm Routers | n/a |
|
Configuration 1
- ≤ 22.5.9.163
Configuration 2
- ≤ 21.5.37.246
Configuration 3
- ≤ 32.1.15.93
Configuration 4
- ≤ 22.6.3.20
Configuration 5
- ≤ 20.4.1.7
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:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/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 3, 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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.37% (0.00368) | 28.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00363) | 27.91th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.11% (0.00106) | 26.29th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.19% (0.00186) | 57.17th | v3 (v2023.03.01) |
| Feb 20, 2024 | 0.12% (0.00117) | 44.41th | v3 (v2023.03.01) |
| Aug 18, 2023 | 0.08% (0.00083) | 34.29th | v3 (v2023.03.01) |
| Apr 9, 2023 | 0.08% (0.00076) | 30.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00053) | 19.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Mar 8, 2022 | 0.89% (0.00885) | 11.25th | v2 (v2022.01.01) |
References (1)
- https://www.tenable.com/security/research/tra-2022-01 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.tenable.com/security/research/tra-2022-01 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.