CVE-2021-37555: TX9 Automatic Food Dispenser v3.2.57 devices allow access to a shell as root/superuser, a related issue to CVE

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CRITICAL 9.8REMOTEMITIGATE

CVE-2021-37555 is a critical-severity flaw (CVSS 9.8) affecting tx9 automatic food dispenser firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TX9 Automatic Food Dispenser v3.2.57 devices allow access to a shell as root/superuser, a related issue to CVE-2019-16734. To connect, the telnet service is used on port 23 with the default password of 059AnkJ for the root account. The user can then download the filesystem through preinstalled BusyBox utilities (e.g., tar and nc).

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-798
Published	2021-07-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: trixie

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

Am I affected?

Timeline

2021-07-26 21:15 UTCPublished CVE record published
2026-06-17 04:00 UTCUpdated Record last modified

trixie tx9 automatic food dispenser firmware MITIGATE

Affected: 3.2.57

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.2.57

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-2021-37555?

tx9 automatic food dispenser firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-37555 being exploited?

CVE-2021-37555 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-2021-37555 affect?

CVE-2021-37555 affects tx9 automatic food dispenser firmware. Severity is critical (CVSS 9.8). TX9 Automatic Food Dispenser v3.2.57 devices allow access to a shell as root/superuser, a related issue to CVE-2019-16734. To connect, the telnet service is used on port 23 with the default password of 059AnkJ for the root account. The user

How urgent is CVE-2021-37555?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

References

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