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Fencer Vulns
critical 9.8

CVE-2021-22667 json

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 u…

published 2021-02-24 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9803

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

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).

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-054-02 updated cvss 9.8

Advantech BB-ESWGP506-2SFP-T

  • Advantech BB-ESWGP506-2SFP-T industrial ethernet switches <= 1.01.09
    affected: mitigation “Advantech no longer sells or maintains BB-ESWGP506-2SFP-T and considers it to be an end-of-life product.”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

3.74% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • n/a BB-ESWGP506-2SFP-T

Classification

Weakness
  • CWE-798 Use of Hard-coded Credentials

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.