How severe is CVE-2020-35756?

CVE-2020-35756 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-35756 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35756?

CVE-2020-35756 affects Librewireless Ls9 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35756?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-35756 published?

CVE-2020-35756 was published on 2021-05-03 and last updated on 2026-06-17.

CVE-2020-35756

CVE-2020-35756 is a high-severity vulnerability in Librewireless Ls9 Firmware with a CVSS 3.x base score of 7.5. 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-306.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Librewireless Ls9 Firmware
Published: 2021-05-03
Last modified: 2026-06-17

Description

An issue was discovered on Libre Wireless LS9 LS1.5/p7040 devices. There is a luci_service GETPASS Configuration Password Information Leak. The luci_service daemon running on port 7777 does not require authentication to return the device configuration password in cleartext when using the GETPASS command. As such, any unauthenticated person with access to port 7777 on the device will be able to leak the user's personal device configuration password by issuing the GETPASS command.

Frequently asked questions

What is CVE-2020-35756?: An issue was discovered on Libre Wireless LS9 LS1.5/p7040 devices. There is a luci_service GETPASS Configuration Password Information Leak. The luci_service daemon running on port 7777 does not require authentication to return the device configuration password in cleartext when using the GETPASS command. As such, any unauthenticated person with access to port 7777 on the device will be able to leak the user's personal device configuration password by issuing the GETPASS command.
How severe is CVE-2020-35756?: CVE-2020-35756 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-35756 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35756?: CVE-2020-35756 affects Librewireless Ls9 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35756?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-35756 published?: CVE-2020-35756 was published on 2021-05-03 and last updated on 2026-06-17.

References

https://www.iot-inspector.com/blog/advisory-multiple-issues-libre-wireless-ls9/

Affected products (1)

cpe:2.3:o:librewireless:ls9_firmware:7040:*:*:*:*:*:*:*

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