Connect M6E 5G Portable WiFi Router: Improper Authentication
CVE-2026-49203 is a high-severity improper authentication vulnerability in Connect M6E 5G Portable WiFi Router from Acer, with a CVSS 3.1 base score of 8.3 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected Connect M6E 5G Portable WiFi Router versions: M6E_AI_1.00.000019 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.17% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Connect M6E 5G Portable WiFi Router you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on community.acer.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Acer | Connect M6E 5G Portable WiFi Router | M6E_AI_1.00.000019 and earlier | Not stated |
| Acer | Connect M6e 5g Firmware | m6e_ai_1.00.000019 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- LowSome restricted data can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 7.2 | High | CNA |
| CVSS 3.1 | 8.3 | High | NVD |
Official description
Crucial management API endpoints for cellular eSIM allocation do not validate caller authorization, allowing remote profiles to be rewritten or deleted.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
- community.acer.com/en/kb/articles/19707Mitigation
Other vulnerabilities in Connect M6E 5G Portable WiFi Router
- 9.8 Critical severity
- 7.5 High severity
- 9.8 Critical severity
- 7.5 High severity
- 7.8 High severity
- 9.4 Critical severity
Recent Improper Authentication vulnerabilities
- 8.6 High severity
- 8.8 High severity
- 9.8 Critical severity
- 7.3 High severity
- 9.8 Critical severity
- 8.8 High severity
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