Beetel 777VR1 up to 01.00.09/01.00.09_55 UART Interface access control
Summary
A vulnerability labeled as critical has been found in Beetel 777VR1 up to 01.00.09/01.00.09_55. The impacted element is an unknown function of the component UART Interface. Such manipulation leads to access control. This vulnerability is referenced as CVE-2026-1411. The attack can be executed directly on the physical device. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.
Details
A vulnerability was found in Beetel 777VR1 up to 01.00.09/01.00.09_55. It has been rated as critical. Affected by this issue is an unknown part of the component UART Interface. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability.
The advisory is shared for download at gist.github.com. This vulnerability is handled as CVE-2026-1411. The exploitation is known to be difficult. The attack needs to be approached locally. The exploitation requires an enhanced level of successful authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.
The exploit is available at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202601-4426). VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Vendor
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 6.1VulDB Meta Temp Score: 5.8
VulDB Base Score: 6.1
VulDB Temp Score: 5.6
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 6.1
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Access controlCWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒
Physical: Yes
Local: Yes
Remote: No
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
01/25/2026 Advisory disclosed01/25/2026 VulDB entry created
01/27/2026 VulDB entry last update
Sources
Advisory: gist.github.comStatus: Not defined
CVE: CVE-2026-1411 (🔒)
GCVE (CVE): GCVE-0-2026-1411
GCVE (VulDB): GCVE-100-342800
CNNVD: CNNVD-202601-4426 - Beetel 777VR1 访问控制错误漏洞
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 01/25/2026 10:48Updated: 01/27/2026 21:58
Changes: 01/25/2026 10:48 (55), 01/26/2026 05:02 (30), 01/27/2026 21:58 (6)
Complete: 🔍
Submitter: raghav_2026
Cache ID: 216::103
Submit
Accepted
- Submit #740674: Beetel Beetel 777VR1 Broadband Router Firmware Versions: V01.00.09 / V01.00.09_55 CWE-284 — Improper Access Control (by raghav_2026)
VulDB is the best source for vulnerability data and more expert information about this specific topic.
No comments yet. Languages: en.
Please log in to comment.