How severe is CVE-2021-37555?

CVE-2021-37555 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-37555 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37555?

CVE-2021-37555 affects Trixie Tx9 Automatic Food Dispenser Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37555?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-37555 published?

CVE-2021-37555 was published on 2021-07-26 and last updated on 2026-06-17.

CVE-2021-37555

CVE-2021-37555 is a critical-severity vulnerability in Trixie Tx9 Automatic Food Dispenser Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Trixie Tx9 Automatic Food Dispenser Firmware
Published: 2021-07-26
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is CVE-2021-37555?: 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).
How severe is CVE-2021-37555?: CVE-2021-37555 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-37555 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37555?: CVE-2021-37555 affects Trixie Tx9 Automatic Food Dispenser Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37555?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-37555 published?: CVE-2021-37555 was published on 2021-07-26 and last updated on 2026-06-17.

References

http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-296520

Affected products (1)

cpe:2.3:o:trixie:tx9_automatic_food_dispenser_firmware:3.2.57:*:*:*:*:*:*:*

Other CWE-798 (Use of Hard-coded Credentials) vulnerabilities

CVE-2026-13768 — Critical (CVSS 10.0): Gardyn devices expose a privileged iothubowner key. Access to this key will allow a malicious user to invoke an IoTHub…
CVE-2026-45631 — Critical (CVSS 10.0): Dokploy is a free, self-hostable Platform as a Service (PaaS). From 0.27.0 to before 0.29.3, a hardcoded…
CVE-2026-22769 — Critical (CVSS 10.0): Dell RecoverPoint for Virtual Machines, versions prior to 6.0.3.1 HF1, contain a hardcoded credential vulnerability.…
CVE-2025-42890 — Critical (CVSS 10.0): SQL Anywhere Monitor (Non-GUI) baked credentials into the code,exposing the resources or functionality to unintended…
CVE-2025-7503 — Critical (CVSS 10.0): An OEM IP camera manufactured by Shenzhen Liandian Communication Technology LTD exposes a Telnet service (port 23) with…
CVE-2025-20309 — Critical (CVSS 10.0): A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session…

Browse all CWE-798 (Use of Hard-coded Credentials) vulnerabilities →