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TI-2026-54261 Aliases CVE-2026-77977GHSA-8g5x-wgwr-8jwp

Ebyte NA111-M Missing Authentication for Critical Function

Priority LOW 32CWE-306Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00367 30th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
EbyteEbyte NA111-M Firmware9013-2-17—No fix listedCNA
  • Ebyte NA111-M Firmware VendorEbyte Affected 9013-2-17 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77977
  2. 2026-10-03 Alias added: GHSA-8g5x-wgwr-8jwp

References

Other 2

  • TI-2026-53291 Ebyte NA111-M Use of GET Request Method With Sensitive Query Strings CVSS 4.0CRITICAL 9.3
  • TI-2026-51301 Ebyte NA111-M Missing Authentication for Critical Function CVSS 4.0CRITICAL 9.3
  • TI-2026-49868 Ebyte NA111-M Use of Client-Side Authentication CVSS 4.0CRITICAL 9.3
  • TI-2026-53263 Ebyte NA111-M Use of a Broken or Risky Cryptographic Algorithm CVSS 4.0CRITICAL 9.3
  • TI-2026-48951 Ebyte NA111-M Cleartext Transmission of Sensitive Information CVSS 4.0CRITICAL 9.3
  • TI-2026-53750 Ebyte NE2-D11 Use of Client-Side Authentication CVSS 4.0HIGH 8.7
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences