CVE-2017-5259cnPilot Vulnerability
In versions 4.3.2-R4 and prior of Cambium Networks cnPilot firmware, an undocumented, root-privilege administration web shell is available using the HTTP path https:///adm/syscmd.asp.
Published Dec 20, 2017 · Updated May 12, 2026
Key Facts
Patch immediately- CVE-2017-5259 is a high-severity vulnerability (CVSS 8.8 v3) affecting Cnpilot E400 Firmware (Cambiumnetworks), Cnpilot E410 Firmware (Cambiumnetworks), Cnpilot E600 Firmware (Cambiumnetworks) and 3 more products.
- It is exploited in the wild, listed in Industry KEV feed since Jan 3, 2024. No public exploit code is known.
- EPSS estimates a 32% probability of exploitation in the next 30 days.
- Fixed versions are available, including Cnpilot E400 Firmware 4.3.2-r4, Cnpilot E410 Firmware 4.3.2-r4, Cnpilot E600 Firmware 4.3.2-r4.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3
8.8
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
32%
Higher than 98.3% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
49/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Jan 3, 2024
2205 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
8
Reports of active use
Advisories And Exploit References
Description
In versions 4.3.2-R4 and prior of Cambium Networks cnPilot firmware, an undocumented, root-privilege administration web shell is available using the HTTP path https:///adm/syscmd.asp.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jan 3, 2024 | n/a | Not reported |
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Cnpilot E400 FirmwareCambiumnetworks | See advisory | 4.3.2-r4 |
| Cnpilot E410 FirmwareCambiumnetworks | See advisory | 4.3.2-r4 |
| Cnpilot E600 FirmwareCambiumnetworks | See advisory | 4.3.2-r4 |
| Cnpilot R190n FirmwareCambiumnetworks | See advisory | 4.3.2-r4 |
| Cnpilot R190v FirmwareCambiumnetworks | See advisory | 4.3.2-r4 |
Patched Releases
Cnpilot E400 Firmware
4.3.2-r4
Cnpilot E410 Firmware
4.3.2-r4
Cnpilot E600 Firmware
4.3.2-r4
Cnpilot R190n Firmware
4.3.2-r4
Cnpilot R190v Firmware
4.3.2-r4
Timeline
Publicly disclosed
Dec 20, 2017
Added to Industry KEV feed
Jan 3, 2024
Last updated
May 12, 2026
Weakness Type
- CWE-319 Cleartext Transmission of Sensitive Information
- CWE-489 Active Debug Code
References
- advisoryblog.rapid7.com · r7-2017-25-cambium-epmp-and-cnpilot-multiple-vu…
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
In versions 4.3.2-R4 and prior of Cambium Networks cnPilot firmware, an undocumented, root-privilege administration web shell is available using the HTTP path https:///adm/syscmd.asp.
Affected: Cnpilot E400 Firmware (Cambiumnetworks); Cnpilot E410 Firmware (Cambiumnetworks); Cnpilot E600 Firmware (Cambiumnetworks), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jan 3, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Cnpilot E400 Firmware 4.3.2-r4, Cnpilot E410 Firmware 4.3.2-r4, Cnpilot E600 Firmware 4.3.2-r4.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2017-5259 On Your Attack Surface?
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