As of the advisory date, no patch is available. Ebyte has not confirmed a timeline. Organizations should: 1) Restrict network access to the device's web management interface to trusted users only. 2) Use network segmentation to isolate the device from untrusted networks. 3) Monitor device logs for unauthorized access or configuration changes. 4) Contact Ebyte for patch availability updates. 5) If possible, disable remote management features until a patch is applied.
Quick answers
What is CVE-2026-77977?
As of the advisory date, no patch is available. Ebyte has not confirmed a timeline. Organizations should: 1) Restrict network access to the device's web management interface to trusted users only. 2) Use network segmentation to isolate the device from untrusted networks. 3) Monitor device logs for unauthorized access or configuration changes. 4) Contact Ebyte for patch availability updates. 5) If possible, disable remote management features until a patch is applied.
How severe is CVE-2026-77977?
critical, CVSS 9.8
Is CVE-2026-77977 known to be exploited?
It is not marked known-exploited in this record.
How should CVE-2026-77977 be mitigated?
As of the advisory date, no patch is available. Ebyte has not confirmed a timeline. Organizations should: 1) Restrict network access to the device's web management interface to trusted users only. 2) Use network segmentation to isolate the device from untrusted networks. 3) Monitor device logs for unauthorized access or configuration changes. 4) Contact Ebyte for patch availability updates. 5) If possible, disable remote management features until a patch is applied.
CVSS
9.8
Vendor
Ebyte
Published
Sep 30, 2026 · 08:05
Patch
Unknown / not confirmed
Affected products
Ebyte NA111-M
Mitigation
As of the advisory date, no patch is available. Ebyte has not confirmed a timeline. Organizations should: 1) Restrict network access to the device's web management interface to trusted users only. 2) Use network segmentation to isolate the device from untrusted networks. 3) Monitor device logs for unauthorized access or configuration changes. 4) Contact Ebyte for patch availability updates. 5) If possible, disable remote management features until a patch is applied.
CISA has published an advisory detailing 13 vulnerabilities in the Ebyte NA111-M gateway, with CVSS scores up to 9.8. The flaws could allow unauthenticated remote attackers to fully compromise the device, access sensitive information, or disrupt availability. No patch is currently available; Ebyte has not confirmed a timeline.