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Fencer Intel
medium 6.1

CVE-2021-22276 json

free@home System Access Point FW integrity check can be bypassed.

published 5y ago modified 4mo ago also EUVD-2021-9422

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

The vulnerability allows a successful attacker to bypass the integrity check of FW uploaded to the free@home System Access Point.

Patch / fix

  • abb system_access_point_2.0_firmware 2.6.4
  • abb system_access_point_127v_firmware 2.6.4
  • abb wl-system_access_point_127v_firmware 2.6.4
  • abb wl-system_access_point_firmware 2.6.4
  • abb wl-system_access_point_2.0_firmware 2.6.4

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Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • ABB System Access Point
  • Busch-Jaeger System Access Point

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-354 Improper Validation of Integrity Check Value

References

Sources

Fencer Intel 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.