CVE-2016-5791
An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper...
An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper authentication could provide an undocumented BusyBox Linux shell accessible over the TELNET service without any authentication.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper authentication could provide an undocumented BusyBox Linux shell accessible over the TELNET service without any authentication.
- Record
CVE-2016-5791- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper authentication could provide an undocumented BusyBox Linux shell accessible over the TELNET service without any authentication.
- Record
CVE-2016-5791- Updated
- 2026-11-02
EUVDEUVD-2016-6726 No score
An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper authentication could provide an undocumented BusyBox Linux shell accessible over the TELNET service without any authentication.
- Record
EUVD-2016-6726- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rfqg-cc66-j4h7
An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper...
An Improper Authentication issue was discovered in JanTek JTC-200, all versions. The improper authentication could provide an undocumented BusyBox Linux shell accessible over the TELNET service without any authentication.
- Record
GHSA-rfqg-cc66-j4h7- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-5791 is a critical vulnerability (CVSS 9.8) in Jantek Jtc-200 Firmware, published October 13, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.39%, the 84th percentile. No source names a fixed version.