How severe is CVE-2017-17743?

CVE-2017-17743 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-17743 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-17743?

CVE-2017-17743 affects Ucopia Wireless Appliance Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-17743?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-17743 published?

CVE-2017-17743 was published on 2018-03-22 and last updated on 2026-06-17.

CVE-2017-17743

CVE-2017-17743 is a medium-severity vulnerability in Ucopia Wireless Appliance Firmware with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 6.5
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Ucopia Wireless Appliance Firmware
Published: 2018-03-22
Last modified: 2026-06-17

Description

Improper input sanitization within the restricted administration shell on UCOPIA Wireless Appliance devices before 4.4.20, 5.0.x before 5.0.19, and 5.1.x before 5.1.11 allows authenticated remote attackers to escape the shell and escalate their privileges by uploading a .bashrc file containing the /bin/sh string. In some situations, authentication can be achieved via the bhu85tgb default password for the admin account.

Frequently asked questions

What is CVE-2017-17743?: Improper input sanitization within the restricted administration shell on UCOPIA Wireless Appliance devices before 4.4.20, 5.0.x before 5.0.19, and 5.1.x before 5.1.11 allows authenticated remote attackers to escape the shell and escalate their privileges by uploading a .bashrc file containing the /bin/sh string. In some situations, authentication can be achieved via the bhu85tgb default password for the admin account.
How severe is CVE-2017-17743?: CVE-2017-17743 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-17743 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-17743?: CVE-2017-17743 affects Ucopia Wireless Appliance Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-17743?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-17743 published?: CVE-2017-17743 was published on 2018-03-22 and last updated on 2026-06-17.

References

https://securite.intrinsec.com/2018/03/19/cve-2017-17743-ucopia-shell-escape/

Affected products (1)

cpe:2.3:o:ucopia:wireless_appliance_firmware:*:*:*:*:*:*:*:*

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