CVE-2026-77977

7.2 highEPSS 0.4%

High (7.2). EPSS 0.4% chance of exploitation in the next 30 days.

Ebyte gateway product's vendor configuration utility does not require authentication before allowing certain disruptive administrative actions when default credentials remain configured. An unauthenticated attacker on the adjacent network could reboot the device or restore factory settings, resulting in a loss of configuration and service availability.

Severity

CVSS 4.0

7.2 high

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

8.1 high

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-31)
CWE: CWE-306
Published: 2026-08-28
Modified: 2026-08-31
Record from: the NVD, synced 2026-10-19

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json
https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06

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