Vulnerability · Published Jun 4, 2026 · Assigned by Acer
CVE-2026-49191Exposed Hard-coded M3WebServer Backend API Key
Critical 9.3
In plain English
A critical-severity improper authentication in Connect M6E 5G Portable WiFi Router from Acer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Severity (CVSS 4.0)9.3Critical
Exploit odds (30 days)0.3%top 78.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The production build of the M3WebServer hard-codes its backend API keys, which can be easily intercepted through verbose error handling pages.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Acer | Connect M6E 5G Portable WiFi Router | * – through M6E_AI_1.00.000019 |
Weakness: CWE-287 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N