Authentication Bypass Vulnerability
Source GCVE Database
Not known to be exploited.
Data as of 2 Nov 2026, 23:28 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 2 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Description
An authentication bypass vulnerability exists in the Universal Plug and Play (UPnP) framework of the Sercomm AOT-4221SR 4.6 Dual Band GPON ONU device. This flaw allows attackers to send arbitrary SOAP requests via port 5555 without requiring credentials, exposing 15 administrative, WAN, LAN, and firewall services. Exploitation can lead to modification of core routing tables, alteration of DNS servers, removal of firewall rules, and full network compromise.