CVE-2026-1411Public exploit

Device compromise via unrestricted UART bootloader commands

Published Jan 26, 2026 · Updated Jan 26, 2026

UART bootloader access-control failure in Beetel 777VR1 01.00.09 and 01.00.09_55 allows physically proximate attackers to read and modify memory. The production bootloader exposes functional memory-read, memory-write, dump, and TFTP backup commands without lifecycle or operating-mode restrictions. Reaching the commands requires physical UART access and interrupting startup with ESC; they permit firmware extraction, arbitrary memory or flash modification, and persistent malicious code.

CVSS severity6.1
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UART bootloader access-control failure in Beetel 777VR1 01.00.09 and 01.00.09_55 allows physically proximate attackers to read and modify memory. The production bootloader exposes functional memory-read, memory-write, dump, and TFTP backup commands without lifecycle or operating-mode restrictions. Reaching the commands requires physical UART access and interrupting startup with ESC; they permit firmware extraction, arbitrary memory or flash modification, and persistent malicious code.

The record

CVE
CVE-2026-1411
Published
Jan 26, 2026
Updated
Jan 26, 2026
Vendor
Beetel Teletech Limited
Product
777VR1 Firmware
Classifications
CWE-266, CWE-284, T1542.001
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=01.00.09
  2. Affected versionversion=01.00.09_55

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

Beetel Teletech Limited · 777VR1 Firmwareversion=01.00.09; version=01.00.09_55

Published CVSS scores

5.9VulDBAV:L/AC:H/Au:M/C:C/I:C/A:C
6.1VulDBCVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
4.5VulDBCVSS:4.0/AV:P/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CWE-284Improper Access Control
T1542.001System Firmware

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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