Router Movistar 4G: Unprotected Primary Channel
CVE-2024-2414 is a high-severity unprotected primary channel vulnerability in Router Movistar 4G from Movistar, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected Router Movistar 4G versions: ES_WLD71-T1_v2.0.20182. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.28% 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 Router Movistar 4G you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Movistar | Router Movistar 4G | ES_WLD71-T1_v2.0.20182 | Not stated |
| Movistar | es_wld71-t1_firmware | 2.0.201820 | 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
- HighAll data handled by the component 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:H/I:H/A:H. Scored by CNA (incibe.es).
Official description
The primary channel is unprotected on Movistar 4G router affecting E version S_WLD71-T1_v2.0.201820. This device has the 'adb' service open on port 5555 and provides access to a shell with root privileges.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Unprotected Primary Channel
The product uses a primary channel for administration or restricted functionality, but it does not properly protect the channel.
How developers prevent this class of flaw
- Do not expose administrative functionality on the user UI.
- Protect the administrative/restricted functionality with a strong authentication mechanism.
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
Other vulnerabilities in Router Movistar 4G
- 7.8 High severity
Recent Unprotected Primary Channel vulnerabilities
- 9.8 Critical severity
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