Western Digital My Cloud Cloud, Mirror Gen2, EX2 Ultra, EX2100, EX4100, DL2100, DL4100, PR2100 and PR4100 before firmware 2.31.183 are affected by a code execution (as root, starting from a low-privilege user session) vulnerability
Published May 23, 2019
8.8
HIGHCVSS 3.0
EPSS 3.00%
Description
Western Digital My Cloud Cloud, Mirror Gen2, EX2 Ultra, EX2100, EX4100, DL2100, DL4100, PR2100 and PR4100 before firmware 2.31.183 are affected by a code execution (as root, starting from a low-privilege user session) vulnerability. The cgi-bin/webfile_mgr.cgi file allows arbitrary file write by abusing symlinks. Specifically, this occurs by uploading a tar archive that contains a symbolic link, then uploading another archive that writes a file to the link using the "cgi_untar" command. Other commands might also be susceptible. Code can be executed because the "name" parameter passed to the cgi_unzip command is not sanitized.
Affected products
No data.
Configuration 1
- < 2.31.183
Running on/with
- n/a
Configuration 2
- < 2.31.183
Running on/with
- n/a
Configuration 3
- < 2.31.183
Running on/with
- n/a
Configuration 4
- < 2.31.183
Running on/with
- n/a
Configuration 5
- < 2.31.183
Running on/with
- n/a
Configuration 6
- < 2.31.183
Running on/with
- n/a
Configuration 7
- < 2.31.183
Running on/with
- n/a
Configuration 8
- < 2.31.183
Running on/with
- n/a
Configuration 9
- < 2.31.183
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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.00% (0.02996) | 86.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.05% (0.03052) | 85.81th | v5 (v2026.06.15) |
| May 8, 2026 | 1.46% (0.01456) | 80.94th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.63% (0.02635) | 84.38th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.78% (0.04782) | 82.06th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.63% (0.02635) | 84.69th | v4 (v2025.03.14) |
| Jul 20, 2024 | 2.04% (0.02037) | 89.11th | v3 (v2023.03.01) |
| May 16, 2024 | 2.04% (0.02037) | 88.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.70% (0.01702) | 85.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.20% (0.02199) | 81.14th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.20% (0.02199) | 79.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 21.90% (0.21903) | 94.30th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.59% (0.06590) | 82.89th | v1 |
| Jan 6, 2022 | 6.59% (0.06590) | 82.73th | v1 |
| Sep 1, 2021 | 1.55% (0.01548) | 72.76th | v1 |
| Apr 14, 2021 | 1.55% (0.01548) | 0.00th | v1 |
References (3)
- https://bnbdr.github.io/posts/wd/ x_refsource_MISCExploitThird Party Advisory
- https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-183-05-20-2019/237717 x_refsource_CONFIRMVendor Advisory
- https://github.com/bnbdr/wd-rce/ x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bnbdr.github.io/posts/wd/ | x_refsource_MISCExploitThird Party Advisory | |
| https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-183-05-20-2019/237717 | x_refsource_CONFIRMVendor Advisory | |
| https://github.com/bnbdr/wd-rce/ | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.