CVE-2026-1409: A security vulnerability has been detected in Beetel 777VR1 up to 01.00.09/01.00.09_55

Q: How do I fix CVE-2026-1409?

777vr1 firmware: upgrade to newer than 01.00.09_55. Exact commands for each OS are on this page.

Q: Is CVE-2026-1409 being exploited?

CVE-2026-1409 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-1409 affect?

CVE-2026-1409 affects 777vr1 firmware. Severity is low (CVSS 2.0). A security vulnerability has been detected in Beetel 777VR1 up to 01.00.09/01.00.09_55. This issue affects some unknown processing of the component UART Interface. The manipulation leads to improper restriction of excessive authentication a

Q: How urgent is CVE-2026-1409?

Priority 20/100. Public exploit reference

Routine

LOW 2.0UPGRADE

CVE-2026-1409 is a low-severity flaw (CVSS 2.0) affecting 777vr1 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A security vulnerability has been detected in Beetel 777VR1 up to 01.00.09/01.00.09_55. This issue affects some unknown processing of the component UART Interface. The manipulation leads to improper restriction of excessive authentication attempts. It is possible to launch the attack on the physical device. The attack's complexity is rated as high. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be use

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	2.0 (Low)
Attack vector	Physical
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-307, CWE-799
Published	2026-01-26
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: beetel

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-26 00:16 UTCPublished CVE record published
2026-06-17 10:15 UTCUpdated Record last modified

beetel 777vr1 firmware UPGRADE

Affected: <= 01.00.09_55

Fixed in: newer than 01.00.09_55

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-1409?

777vr1 firmware: upgrade to newer than 01.00.09_55. Exact commands for each OS are on this page.

Is CVE-2026-1409 being exploited?

CVE-2026-1409 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-1409 affect?

CVE-2026-1409 affects 777vr1 firmware. Severity is low (CVSS 2.0). A security vulnerability has been detected in Beetel 777VR1 up to 01.00.09/01.00.09_55. This issue affects some unknown processing of the component UART Interface. The manipulation leads to improper restriction of excessive authentication a

How urgent is CVE-2026-1409?

Priority 20/100. Public exploit reference

Related CVEs

CVE-2026-2618 LOW 3.7 UPGRADE A vulnerability was determined in Beetel 777VR1 up to 01.00.09
CVE-2026-2617 MEDIUM 6.3 UPGRADE A vulnerability was found in Beetel 777VR1 up to 01.00.09
CVE-2026-2616 HIGH 8.8 UPGRADE A vulnerability has been found in Beetel 777VR1 up to 01.00.09
CVE-2026-1411 MEDIUM 6.1 UPGRADE A flaw has been found in Beetel 777VR1 up to 01.00.09/01.00.09_55
CVE-2026-1410 MEDIUM 6.4 UPGRADE A vulnerability was detected in Beetel 777VR1 up to 01.00.09/01.00.09_55

References

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