CVE-2021-22667

Name: CVE-2021-22667
Creator: NVD / NIST
Published: 2021-02-24T17:15:16.093+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.61%

Last modified Jun 17, 2026

CVE-2021-22667 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. BB-ESWGP506-2SFP-T versions 1.01.09 and prior is vulnerable due to the use of hard-coded credentials, which may allow an attacker to gain unauthorized access and permit the execution of arbitrary code on the BB-ESWGP506-2SFP-T (versions 1.01.01 and prior).. EPSS estimates a 3.61% chance of exploitation in the next 30 days.

Description

BB-ESWGP506-2SFP-T versions 1.01.09 and prior is vulnerable due to the use of hard-coded credentials, which may allow an attacker to gain unauthorized access and permit the execution of arbitrary code on the BB-ESWGP506-2SFP-T (versions 1.01.01 and prior).

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.61%

88.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Advantech	Bb-Eswgp506-2sfp-T Firmware	<= 1.01.09

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-054-02Mitigation, Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-593/Third Party Advisory, VDB Entry
https://us-cert.cisa.gov/ics/advisories/icsa-21-054-02Mitigation, Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-593/Third Party Advisory, VDB Entry

Timeline

Published: Feb 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22667?

How severe is CVE-2021-22667?

CVE-2021-22667 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.61% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22667?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22667?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST